🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 10 (from laksa155)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa010.int.ahrefs:8124/' \
  -H 'Content-Type: text/plain' \
  -H 'X-ClickHouse-Database: crawler3' \
  -H 'Authorization: Basic YXBpOg==' \
  -d 'SELECT getAhrefsURLFromUnparsed(src_unparsed) AS found_url, ifNull(toUnixTimestamp(download_stamp), 0) AS crawl_time, ifNull(toUnixTimestamp(props_url_first_seen), 0) AS first_indexed_time, download_http_code AS http_code, src_unparsed AS src_unparsed, src_root_hash AS src_root_hash, history_drop_reason AS history_drop_reason, meta_title AS meta_title, meta_descriptions AS meta_descriptions, attrs_boilerpipe_text AS attrs_boilerpipe_text, attrs_markdown AS attrs_markdown, attrs_readable_markdown AS attrs_readable_markdown, meta_canonical AS meta_canonical FROM crawler3.page_info_local FINAL PREWHERE (src_root_hash, src_unparsed) IN ((getAhrefsRootHashFromUnparsed(getAhrefsUnparsedNoserviceFromURL(\'https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/\')), getAhrefsUnparsedNoserviceFromURL(\'https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/","crawl_time":1775621704,"first_indexed_time":1644947937,"http_code":200,"src_unparsed":"ie,hse!www2,\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/ s443","src_root_hash":"5514331230062789010","history_drop_reason":null,"meta_title":"COVID-19 vaccine side effects and safety","meta_descriptions":["Most COVID-19 vaccine side effects are mild and do not last long. Read about the side effects of COVID-19 vaccines used in Ireland."],"attrs_boilerpipe_text":"The COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine.\nComirnaty vaccine side effects\nLike all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects.\nIf you are concerned about side effects, contact your GP for advice.\nSerious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions.\nMost side effects from COVID-19 vaccination do not last long.\nVery common side effects\nVery common side effects may affect more than 1 in 10 people.\nThese include:\ntenderness or swelling in your arm where you had the vaccine\nfeeling tired\nheadache\nmuscle pain\njoint pain\ndiarrhoea\nfever (temperature of 38 degrees Celsius or above)\nchills\nSome of these side effects are slightly more frequent in young people age 12 to 15 than in adults.\nIn children age 2 to 4, the most common side effects include:\ntenderness or redness at the injection site\nfeeling tired\nfever (temperature of 38 degrees Celsius or above)\nIn children age 6 to 23 months, the most common side effects include:\nirritability\nsleepiness\nloss of appetite\ntenderness or redness at the injection site\nfever (temperature of 38 degrees Celsius or above)\nFever after COVID-19 vaccines\nIt is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine.\nIf you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet.\nCommon side effects\nCommon side effects may affect up to 1 in 10 people.\nThese include:\nnausea\nvomiting\nredness in your arm where you had the vaccine\nUncommon side effects\nUncommon side effects may affect up to 1 in 100 people.\nThese include:\nitchiness where the vaccine was given\ndizziness\ngeneralised itchiness\nallergic reactions like hives or a rash or swelling in the face\nsleeplessness\nexcessive sweating, night sweats\nreduced appetite\nlack of energy or feeling unwell\npain in the arm you got the vaccine in\nRare side effects\nRare side effects may affect up to 1 in 1,000 people.\nThese include:\ntemporary drooping on 1 side of the face\nVery rare side effects\nVery rare side effects may affect up to 1 in 10,000 people.\nThese include:\nmyocarditis\npericarditis\nMyocarditis and pericarditis are inflammatory heart conditions.\nThe risk of these very rare conditions is higher in young men.\nThese conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine.\nSymptoms of myocarditis and pericarditis\nGet urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine:\nbreathlessness\npalpitations (a forceful heartbeat that may be irregular)\nchest pain\nSigns of myocarditis in younger children may be more general including:\nirritability\nvomiting\ndifficulty feeding\nrapid and shallow breathing\nExtremely rare side effects\nOther side effects that may happen after a COVID-19 vaccine include:\na skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard\nunusual feeling in the skin, such as tingling or a crawling feeling\nreduced feeling or sensitivity, especially in the skin\nheavy menstrual bleeding (period) - this is usually not serious and does not last long\nIngredients of Comirnaty COVID-19 vaccine\nThe Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex.\nYou can read more about the vaccine ingredients on the European Medicine Agency's website.\nComirnaty COVID-19 vaccine - ema.europa.eu\nWho should not get this vaccine\nMost people can safely get the Comirnaty COVID-19 vaccine.\nWho should not get the Comirnaty COVID-19 vaccine\nThis vaccine is not recommended if you:\nhad a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine\nhad a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG)\nwere told by a doctor that you should not get an mRNA vaccine\nhad a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies)\nTalk to your doctor before getting this vaccine if you:\nhad a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine\nhad myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine\nhave mastocytosis\nhave a child with a history of\nmultisystem inflammatory syndrome (MIS-C), also known as PIMS\nWhat to do if you have a side effect of the COVID-19 vaccine\nTalk to your GP if you have any side effects.\nIf you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help.\nIf your fever lasts more than 48 hours or if you are still concerned, talk to your GP.\nIf you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy.\nYou can report any side effects to the Health Products Regulatory Authority (HPRA) at\nhpra.ie\n.\nOther COVID-19 vaccines\nThe Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended.\nNuvaxovid (Novavax) vaccine\nThe Nuvaxovid (Novavax) vaccine is currently not available in Ireland.\nWe are trying to get supplies of the vaccine but we do not know if or when it will become available.\nYou can call HSELive at Freephone\n1800 700 700\nand ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available.\nVaccines previously offered\nSide effects of vaccines previously offered in Ireland\nReporting side effects\nIf you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA).\nYour GP, nurse, pharmacist or a family member can also report the side effect to the HPRA.\nCOVID-19 vaccine adverse reaction report - hpra.ie\nWhen reporting a side effect\nGive as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card.\nThe HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have.\nMpox vaccine\nIf you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis.\nMpox vaccine\nThis content was fact checked by vaccine experts working in Ireland.","attrs_markdown":"[Skip to main content](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/#maincontent)\n\n- [Jobs](https:\/\/about.hse.ie\/jobs\/job-search\/)\n- [HSE Staff](https:\/\/healthservice.hse.ie\/staff\/)\n- [About the HSE](https:\/\/about.hse.ie\/)\n\nMenu Close\n\n- [English selected](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/)\n- [Irish Gaeilge](https:\/\/www2.hse.ie\/ga\/screening-and-vaccinations\/vacsain-in-aghaidh-covid-19\/fo-iarmhairti\/)\n\nToggle search Search Close\n\nRecommended links\n\n- [Medical cards](https:\/\/www2.hse.ie\/services\/schemes-allowances\/medical-cards\/)\n- [European Health Insurance Card (EHIC)](https:\/\/www2.hse.ie\/services\/schemes-allowances\/ehic\/)\n- [Find urgent and emergency care](https:\/\/www2.hse.ie\/services\/urgent-emergency-care\/)\n- [Find a civil registration service](https:\/\/www2.hse.ie\/services\/births-deaths-and-marriages\/find-a-civil-registration-service\/)\n- [GP visit cards](https:\/\/www2.hse.ie\/services\/schemes-allowances\/gp-visit-cards\/gp-visit-cards\/)\n\n- [Health A to Z](https:\/\/www2.hse.ie\/conditions\/)\n- [Services](https:\/\/www2.hse.ie\/services\/)\n- [Living well](https:\/\/www2.hse.ie\/living-well\/)\n- [Mental health](https:\/\/www2.hse.ie\/mental-health\/)\n- [Pregnancy and birth](https:\/\/www2.hse.ie\/pregnancy-birth\/)\n- [Babies and children](https:\/\/www2.hse.ie\/babies-children\/)\n\n- [English selected](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/)\n- [Irish Gaeilge](https:\/\/www2.hse.ie\/ga\/screening-and-vaccinations\/vacsain-in-aghaidh-covid-19\/fo-iarmhairti\/)\n\n- [Jobs](https:\/\/about.hse.ie\/jobs\/job-search\/)\n- [HSE Staff](https:\/\/healthservice.hse.ie\/staff\/)\n- [About the HSE](https:\/\/about.hse.ie\/)\n\n- [Health A to Z](https:\/\/www2.hse.ie\/conditions\/)\n- [Services](https:\/\/www2.hse.ie\/services\/)\n- [Living Well](https:\/\/www2.hse.ie\/living-well)\n\n1. [Home](https:\/\/www2.hse.ie\/)\n2. [Screening and vaccinations](https:\/\/www2.hse.ie\/screening-and-vaccinations\/)\n3. [COVID-19 vaccination](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/)\n\n[Back to COVID-19 vaccination](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/)\n\n### Warning notification:Warning\nUnfortunately, you are using an outdated browser. Please, upgrade your browser to improve your experience with HSE. The list of supported browsers:\n\n1. [Chrome](https:\/\/www.google.com\/intl\/en_ie\/chrome\/ \"Chrome\")\n2. [Edge](https:\/\/www.microsoft.com\/en-us\/edge?form=MA13FJ&exp=e00 \"Edge\")\n3. [FireFox](https:\/\/www.mozilla.org\/en-US\/firefox\/new\/ \"FireFox\")\n4. [Opera](https:\/\/www.opera.com\/ \"Opera\")\n5. [Safari](https:\/\/www.apple.com\/safari\/ \"Safari\")\n\n# Side effects and safety of COVID-19 vaccines\nThe COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine.\n\n## Comirnaty vaccine side effects\nLike all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects.\n\nIf you are concerned about side effects, contact your GP for advice.\n\nSerious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions.\n\nMost side effects from COVID-19 vaccination do not last long.\n\nVery common side effects\n\nVery common side effects may affect more than 1 in 10 people.\n\nThese include:\n\n- tenderness or swelling in your arm where you had the vaccine\n- feeling tired\n- headache\n- muscle pain\n- joint pain\n- diarrhoea\n- fever (temperature of 38 degrees Celsius or above)\n- chills\n\nSome of these side effects are slightly more frequent in young people age 12 to 15 than in adults.\n\nIn children age 2 to 4, the most common side effects include:\n\n- tenderness or redness at the injection site\n- feeling tired\n- [fever (temperature of 38 degrees Celsius or above)](https:\/\/www2.hse.ie\/conditions\/high-temperature\/)\n\nIn children age 6 to 23 months, the most common side effects include:\n\n- irritability\n- sleepiness\n- loss of appetite\n- tenderness or redness at the injection site\n- fever (temperature of 38 degrees Celsius or above)\n\n### Fever after COVID-19 vaccines\nIt is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine.\n\nIf you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet.\n\nCommon side effects\n\nCommon side effects may affect up to 1 in 10 people.\n\nThese include:\n\n- nausea\n- vomiting\n- redness in your arm where you had the vaccine\n\nUncommon side effects\n\nUncommon side effects may affect up to 1 in 100 people.\n\nThese include:\n\n- itchiness where the vaccine was given\n- dizziness\n- generalised itchiness\n- allergic reactions like hives or a rash or swelling in the face\n- sleeplessness\n- excessive sweating, night sweats\n- reduced appetite\n- lack of energy or feeling unwell\n- pain in the arm you got the vaccine in\n\nRare side effects\n\nRare side effects may affect up to 1 in 1,000 people.\n\nThese include:\n\n- temporary drooping on 1 side of the face\n\nVery rare side effects\n\nVery rare side effects may affect up to 1 in 10,000 people.\n\nThese include:\n\n- myocarditis\n- pericarditis\n\nMyocarditis and pericarditis are inflammatory heart conditions.\n\nThe risk of these very rare conditions is higher in young men.\n\nThese conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine.\n\n#### Symptoms of myocarditis and pericarditis\nGet urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine:\n\n- breathlessness\n- palpitations (a forceful heartbeat that may be irregular)\n- chest pain\n\nSigns of myocarditis in younger children may be more general including:\n\n- irritability\n- vomiting\n- difficulty feeding\n- rapid and shallow breathing\n\nExtremely rare side effects\n\nOther side effects that may happen after a COVID-19 vaccine include:\n\n- a skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard\n- unusual feeling in the skin, such as tingling or a crawling feeling\n- reduced feeling or sensitivity, especially in the skin\n- heavy menstrual bleeding (period) - this is usually not serious and does not last long\n\n## Ingredients of Comirnaty COVID-19 vaccine\nThe Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex.\n\nYou can read more about the vaccine ingredients on the European Medicine Agency's website.\n\n[Comirnaty COVID-19 vaccine - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/comirnaty)\n\n## Who should not get this vaccine\nMost people can safely get the Comirnaty COVID-19 vaccine.\n\nWho should not get the Comirnaty COVID-19 vaccine\n\nThis vaccine is not recommended if you:\n\n- had a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine\n- had a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG)\n- were told by a doctor that you should not get an mRNA vaccine\n- had a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies)\n\nTalk to your doctor before getting this vaccine if you:\n\n- had a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine\n- had myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine\n- have mastocytosis\n- have a child with a history of [multisystem inflammatory syndrome (MIS-C), also known as PIMS](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/get-the-vaccine\/children\/#multisystem-inflammatory-syndrome-or-pims)\n## What to do if you have a side effect of the COVID-19 vaccine\nTalk to your GP if you have any side effects.\n\nIf you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help.\n\nIf your fever lasts more than 48 hours or if you are still concerned, talk to your GP.\n\nIf you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy.\n\nYou can report any side effects to the Health Products Regulatory Authority (HPRA) at [hpra.ie](https:\/\/www.hpra.ie\/).\n\n## Other COVID-19 vaccines\nThe Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended.\n\n### Nuvaxovid (Novavax) vaccine\nThe Nuvaxovid (Novavax) vaccine is currently not available in Ireland.\n\nWe are trying to get supplies of the vaccine but we do not know if or when it will become available.\n\nYou can call HSELive at Freephone [1800 700 700](tel:1800700700) and ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available.\n\n## Vaccines previously offered\n\nSide effects of vaccines previously offered in Ireland\n\nFind a:\n\n- [list of side effects of the Vidprevtyn Beta COVID-19 vaccine on the European Medicines Agency website - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/vidprevtyn-beta)\n- [list of side effects of the Moderna vaccine Spikevax on the European Medicines Agency website - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/spikevax)\n- [list of side effects of the Janssen vaccine Jcovden on the European Medicines Agency website - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/jcovden-previously-covid-19-vaccine-janssen)\n- [list of side effects of the AstraZeneca vaccine Vaxzevria on the European Medicines Agency website - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/vaxzevria)\n\n## Reporting side effects\nIf you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA).\n\nYour GP, nurse, pharmacist or a family member can also report the side effect to the HPRA.\n\n[COVID-19 vaccine adverse reaction report - hpra.ie](https:\/\/www.hpra.ie\/homepage\/about-us\/report-an-issue\/covid-19-vaccine-adverse-reaction)\n\n### When reporting a side effect\nGive as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card.\n\nThe HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have.\n\n## Mpox vaccine\nIf you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis.\n\n[Mpox vaccine](https:\/\/www2.hse.ie\/conditions\/mpox\/#mpox-vaccine)\n\n***\nThis content was fact checked by vaccine experts working in Ireland.\n\nPage last reviewed: 16 September 2025   \n Next review due: 16 September 2028\n\n## HSE Live - we're here to help\nMonday to Friday: 8am to 8pm   \nSaturday: 9am to 5pm   \nSunday: Closed   \nBank holidays: Closed\n\n**Freephone: [1800 700 700](tel:1800700700)**\n\n**From outside Ireland: [00 353 1 240 8787](tel:0035312408787)**\n\n- [HSE Facebook](https:\/\/www.facebook.com\/HSElive\/)\n- [HSE Instagram](https:\/\/instagram.com\/irishhealthservice)\n- [HSE TikTok](https:\/\/www.tiktok.com\/@hselive)\n- [HSE YouTube](https:\/\/www.youtube.com\/channel\/UCoNNhGGAYkdavsSXp1iVzCg)\n- [HSE LinkedIn](https:\/\/ie.linkedin.com\/company\/health-service-executive)\n\n- [Complaints and feedback](https:\/\/www2.hse.ie\/complaints-feedback\/)\n- [Emergencies](https:\/\/www2.hse.ie\/services\/find-urgent-emergency-care\/)\n- [Cookie settings](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/side-effects\/)\n\n## Support links\n- [Cookie statement](https:\/\/www2.hse.ie\/cookie-statement\/)\n- [Accessibility](https:\/\/www2.hse.ie\/accessibility-statement\/)\n- [Privacy statement](https:\/\/www2.hse.ie\/privacy-statement\/)\n- [Disclaimer](https:\/\/www.hse.ie\/disclaimer\/)\n\n© Health Service Executive","attrs_readable_markdown":"The COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine.\n\n## Comirnaty vaccine side effects\nLike all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects.\n\nIf you are concerned about side effects, contact your GP for advice.\n\nSerious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions.\n\nMost side effects from COVID-19 vaccination do not last long.\n\nVery common side effects\n\nVery common side effects may affect more than 1 in 10 people.\n\nThese include:\n\n- tenderness or swelling in your arm where you had the vaccine\n- feeling tired\n- headache\n- muscle pain\n- joint pain\n- diarrhoea\n- fever (temperature of 38 degrees Celsius or above)\n- chills\n\nSome of these side effects are slightly more frequent in young people age 12 to 15 than in adults.\n\nIn children age 2 to 4, the most common side effects include:\n\n- tenderness or redness at the injection site\n- feeling tired\n- [fever (temperature of 38 degrees Celsius or above)](https:\/\/www2.hse.ie\/conditions\/high-temperature\/)\n\nIn children age 6 to 23 months, the most common side effects include:\n\n- irritability\n- sleepiness\n- loss of appetite\n- tenderness or redness at the injection site\n- fever (temperature of 38 degrees Celsius or above)\n\n### Fever after COVID-19 vaccines\nIt is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine.\n\nIf you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet.\n\nCommon side effects\n\nCommon side effects may affect up to 1 in 10 people.\n\nThese include:\n\n- nausea\n- vomiting\n- redness in your arm where you had the vaccine\n\nUncommon side effects\n\nUncommon side effects may affect up to 1 in 100 people.\n\nThese include:\n\n- itchiness where the vaccine was given\n- dizziness\n- generalised itchiness\n- allergic reactions like hives or a rash or swelling in the face\n- sleeplessness\n- excessive sweating, night sweats\n- reduced appetite\n- lack of energy or feeling unwell\n- pain in the arm you got the vaccine in\n\nRare side effects\n\nRare side effects may affect up to 1 in 1,000 people.\n\nThese include:\n\n- temporary drooping on 1 side of the face\n\nVery rare side effects\n\nVery rare side effects may affect up to 1 in 10,000 people.\n\nThese include:\n\n- myocarditis\n- pericarditis\n\nMyocarditis and pericarditis are inflammatory heart conditions.\n\nThe risk of these very rare conditions is higher in young men.\n\nThese conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine.\n\n#### Symptoms of myocarditis and pericarditis\nGet urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine:\n\n- breathlessness\n- palpitations (a forceful heartbeat that may be irregular)\n- chest pain\n\nSigns of myocarditis in younger children may be more general including:\n\n- irritability\n- vomiting\n- difficulty feeding\n- rapid and shallow breathing\n\nExtremely rare side effects\n\nOther side effects that may happen after a COVID-19 vaccine include:\n\n- a skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard\n- unusual feeling in the skin, such as tingling or a crawling feeling\n- reduced feeling or sensitivity, especially in the skin\n- heavy menstrual bleeding (period) - this is usually not serious and does not last long\n\n## Ingredients of Comirnaty COVID-19 vaccine\nThe Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex.\n\nYou can read more about the vaccine ingredients on the European Medicine Agency's website.\n\n[Comirnaty COVID-19 vaccine - ema.europa.eu](https:\/\/www.ema.europa.eu\/en\/medicines\/human\/EPAR\/comirnaty)\n\n## Who should not get this vaccine\nMost people can safely get the Comirnaty COVID-19 vaccine.\n\nWho should not get the Comirnaty COVID-19 vaccine\n\nThis vaccine is not recommended if you:\n\n- had a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine\n- had a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG)\n- were told by a doctor that you should not get an mRNA vaccine\n- had a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies)\n\nTalk to your doctor before getting this vaccine if you:\n\n- had a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine\n- had myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine\n- have mastocytosis\n- have a child with a history of [multisystem inflammatory syndrome (MIS-C), also known as PIMS](https:\/\/www2.hse.ie\/screening-and-vaccinations\/covid-19-vaccine\/get-the-vaccine\/children\/#multisystem-inflammatory-syndrome-or-pims)\n## What to do if you have a side effect of the COVID-19 vaccine\nTalk to your GP if you have any side effects.\n\nIf you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help.\n\nIf your fever lasts more than 48 hours or if you are still concerned, talk to your GP.\n\nIf you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy.\n\nYou can report any side effects to the Health Products Regulatory Authority (HPRA) at [hpra.ie](https:\/\/www.hpra.ie\/).\n\n## Other COVID-19 vaccines\nThe Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended.\n\n### Nuvaxovid (Novavax) vaccine\nThe Nuvaxovid (Novavax) vaccine is currently not available in Ireland.\n\nWe are trying to get supplies of the vaccine but we do not know if or when it will become available.\n\nYou can call HSELive at Freephone [1800 700 700](tel:1800700700) and ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available.\n\n## Vaccines previously offered\n\nSide effects of vaccines previously offered in Ireland\n\n## Reporting side effects\nIf you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA).\n\nYour GP, nurse, pharmacist or a family member can also report the side effect to the HPRA.\n\n[COVID-19 vaccine adverse reaction report - hpra.ie](https:\/\/www.hpra.ie\/homepage\/about-us\/report-an-issue\/covid-19-vaccine-adverse-reaction)\n\n### When reporting a side effect\nGive as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card.\n\nThe HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have.\n\n## Mpox vaccine\nIf you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis.\n\n[Mpox vaccine](https:\/\/www2.hse.ie\/conditions\/mpox\/#mpox-vaccine)\n\n***\nThis content was fact checked by vaccine experts working in Ireland.","meta_canonical":null}

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Meta Title	COVID-19 vaccine side effects and safety
Meta Description	Most COVID-19 vaccine side effects are mild and do not last long. Read about the side effects of COVID-19 vaccines used in Ireland.
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Boilerpipe Text	The COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine. Comirnaty vaccine side effects Like all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects. If you are concerned about side effects, contact your GP for advice. Serious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions. Most side effects from COVID-19 vaccination do not last long. Very common side effects Very common side effects may affect more than 1 in 10 people. These include: tenderness or swelling in your arm where you had the vaccine feeling tired headache muscle pain joint pain diarrhoea fever (temperature of 38 degrees Celsius or above) chills Some of these side effects are slightly more frequent in young people age 12 to 15 than in adults. In children age 2 to 4, the most common side effects include: tenderness or redness at the injection site feeling tired fever (temperature of 38 degrees Celsius or above) In children age 6 to 23 months, the most common side effects include: irritability sleepiness loss of appetite tenderness or redness at the injection site fever (temperature of 38 degrees Celsius or above) Fever after COVID-19 vaccines It is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine. If you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet. Common side effects Common side effects may affect up to 1 in 10 people. These include: nausea vomiting redness in your arm where you had the vaccine Uncommon side effects Uncommon side effects may affect up to 1 in 100 people. These include: itchiness where the vaccine was given dizziness generalised itchiness allergic reactions like hives or a rash or swelling in the face sleeplessness excessive sweating, night sweats reduced appetite lack of energy or feeling unwell pain in the arm you got the vaccine in Rare side effects Rare side effects may affect up to 1 in 1,000 people. These include: temporary drooping on 1 side of the face Very rare side effects Very rare side effects may affect up to 1 in 10,000 people. These include: myocarditis pericarditis Myocarditis and pericarditis are inflammatory heart conditions. The risk of these very rare conditions is higher in young men. These conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine. Symptoms of myocarditis and pericarditis Get urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine: breathlessness palpitations (a forceful heartbeat that may be irregular) chest pain Signs of myocarditis in younger children may be more general including: irritability vomiting difficulty feeding rapid and shallow breathing Extremely rare side effects Other side effects that may happen after a COVID-19 vaccine include: a skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard unusual feeling in the skin, such as tingling or a crawling feeling reduced feeling or sensitivity, especially in the skin heavy menstrual bleeding (period) - this is usually not serious and does not last long Ingredients of Comirnaty COVID-19 vaccine The Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex. You can read more about the vaccine ingredients on the European Medicine Agency's website. Comirnaty COVID-19 vaccine - ema.europa.eu Who should not get this vaccine Most people can safely get the Comirnaty COVID-19 vaccine. Who should not get the Comirnaty COVID-19 vaccine This vaccine is not recommended if you: had a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine had a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG) were told by a doctor that you should not get an mRNA vaccine had a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies) Talk to your doctor before getting this vaccine if you: had a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine had myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine have mastocytosis have a child with a history of multisystem inflammatory syndrome (MIS-C), also known as PIMS What to do if you have a side effect of the COVID-19 vaccine Talk to your GP if you have any side effects. If you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help. If your fever lasts more than 48 hours or if you are still concerned, talk to your GP. If you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy. You can report any side effects to the Health Products Regulatory Authority (HPRA) at hpra.ie . Other COVID-19 vaccines The Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended. Nuvaxovid (Novavax) vaccine The Nuvaxovid (Novavax) vaccine is currently not available in Ireland. We are trying to get supplies of the vaccine but we do not know if or when it will become available. You can call HSELive at Freephone 1800 700 700 and ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available. Vaccines previously offered Side effects of vaccines previously offered in Ireland Reporting side effects If you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA). Your GP, nurse, pharmacist or a family member can also report the side effect to the HPRA. COVID-19 vaccine adverse reaction report - hpra.ie When reporting a side effect Give as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card. The HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have. Mpox vaccine If you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis. Mpox vaccine This content was fact checked by vaccine experts working in Ireland.
Markdown	[Skip to main content](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/#maincontent) - [Jobs](https://about.hse.ie/jobs/job-search/) - [HSE Staff](https://healthservice.hse.ie/staff/) - [About the HSE](https://about.hse.ie/) Menu Close - [English selected](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/) - [Irish Gaeilge](https://www2.hse.ie/ga/screening-and-vaccinations/vacsain-in-aghaidh-covid-19/fo-iarmhairti/) Toggle search Search Close Recommended links - [Medical cards](https://www2.hse.ie/services/schemes-allowances/medical-cards/) - [European Health Insurance Card (EHIC)](https://www2.hse.ie/services/schemes-allowances/ehic/) - [Find urgent and emergency care](https://www2.hse.ie/services/urgent-emergency-care/) - [Find a civil registration service](https://www2.hse.ie/services/births-deaths-and-marriages/find-a-civil-registration-service/) - [GP visit cards](https://www2.hse.ie/services/schemes-allowances/gp-visit-cards/gp-visit-cards/) - [Health A to Z](https://www2.hse.ie/conditions/) - [Services](https://www2.hse.ie/services/) - [Living well](https://www2.hse.ie/living-well/) - [Mental health](https://www2.hse.ie/mental-health/) - [Pregnancy and birth](https://www2.hse.ie/pregnancy-birth/) - [Babies and children](https://www2.hse.ie/babies-children/) - [English selected](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/) - [Irish Gaeilge](https://www2.hse.ie/ga/screening-and-vaccinations/vacsain-in-aghaidh-covid-19/fo-iarmhairti/) - [Jobs](https://about.hse.ie/jobs/job-search/) - [HSE Staff](https://healthservice.hse.ie/staff/) - [About the HSE](https://about.hse.ie/) - [Health A to Z](https://www2.hse.ie/conditions/) - [Services](https://www2.hse.ie/services/) - [Living Well](https://www2.hse.ie/living-well) 1. [Home](https://www2.hse.ie/) 2. [Screening and vaccinations](https://www2.hse.ie/screening-and-vaccinations/) 3. [COVID-19 vaccination](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/) [Back to COVID-19 vaccination](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/) ### Warning notification:Warning Unfortunately, you are using an outdated browser. Please, upgrade your browser to improve your experience with HSE. The list of supported browsers: 1. [Chrome](https://www.google.com/intl/en_ie/chrome/ "Chrome") 2. [Edge](https://www.microsoft.com/en-us/edge?form=MA13FJ&exp=e00 "Edge") 3. [FireFox](https://www.mozilla.org/en-US/firefox/new/ "FireFox") 4. [Opera](https://www.opera.com/ "Opera") 5. [Safari](https://www.apple.com/safari/ "Safari") # Side effects and safety of COVID-19 vaccines The COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine. ## Comirnaty vaccine side effects Like all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects. If you are concerned about side effects, contact your GP for advice. Serious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions. Most side effects from COVID-19 vaccination do not last long. Very common side effects Very common side effects may affect more than 1 in 10 people. These include: - tenderness or swelling in your arm where you had the vaccine - feeling tired - headache - muscle pain - joint pain - diarrhoea - fever (temperature of 38 degrees Celsius or above) - chills Some of these side effects are slightly more frequent in young people age 12 to 15 than in adults. In children age 2 to 4, the most common side effects include: - tenderness or redness at the injection site - feeling tired - [fever (temperature of 38 degrees Celsius or above)](https://www2.hse.ie/conditions/high-temperature/) In children age 6 to 23 months, the most common side effects include: - irritability - sleepiness - loss of appetite - tenderness or redness at the injection site - fever (temperature of 38 degrees Celsius or above) ### Fever after COVID-19 vaccines It is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine. If you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet. Common side effects Common side effects may affect up to 1 in 10 people. These include: - nausea - vomiting - redness in your arm where you had the vaccine Uncommon side effects Uncommon side effects may affect up to 1 in 100 people. These include: - itchiness where the vaccine was given - dizziness - generalised itchiness - allergic reactions like hives or a rash or swelling in the face - sleeplessness - excessive sweating, night sweats - reduced appetite - lack of energy or feeling unwell - pain in the arm you got the vaccine in Rare side effects Rare side effects may affect up to 1 in 1,000 people. These include: - temporary drooping on 1 side of the face Very rare side effects Very rare side effects may affect up to 1 in 10,000 people. These include: - myocarditis - pericarditis Myocarditis and pericarditis are inflammatory heart conditions. The risk of these very rare conditions is higher in young men. These conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine. #### Symptoms of myocarditis and pericarditis Get urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine: - breathlessness - palpitations (a forceful heartbeat that may be irregular) - chest pain Signs of myocarditis in younger children may be more general including: - irritability - vomiting - difficulty feeding - rapid and shallow breathing Extremely rare side effects Other side effects that may happen after a COVID-19 vaccine include: - a skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard - unusual feeling in the skin, such as tingling or a crawling feeling - reduced feeling or sensitivity, especially in the skin - heavy menstrual bleeding (period) - this is usually not serious and does not last long ## Ingredients of Comirnaty COVID-19 vaccine The Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex. You can read more about the vaccine ingredients on the European Medicine Agency's website. [Comirnaty COVID-19 vaccine - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/comirnaty) ## Who should not get this vaccine Most people can safely get the Comirnaty COVID-19 vaccine. Who should not get the Comirnaty COVID-19 vaccine This vaccine is not recommended if you: - had a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine - had a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG) - were told by a doctor that you should not get an mRNA vaccine - had a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies) Talk to your doctor before getting this vaccine if you: - had a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine - had myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine - have mastocytosis - have a child with a history of [multisystem inflammatory syndrome (MIS-C), also known as PIMS](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/get-the-vaccine/children/#multisystem-inflammatory-syndrome-or-pims) ## What to do if you have a side effect of the COVID-19 vaccine Talk to your GP if you have any side effects. If you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help. If your fever lasts more than 48 hours or if you are still concerned, talk to your GP. If you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy. You can report any side effects to the Health Products Regulatory Authority (HPRA) at [hpra.ie](https://www.hpra.ie/). ## Other COVID-19 vaccines The Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended. ### Nuvaxovid (Novavax) vaccine The Nuvaxovid (Novavax) vaccine is currently not available in Ireland. We are trying to get supplies of the vaccine but we do not know if or when it will become available. You can call HSELive at Freephone [1800 700 700](tel:1800700700) and ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available. ## Vaccines previously offered Side effects of vaccines previously offered in Ireland Find a: - [list of side effects of the Vidprevtyn Beta COVID-19 vaccine on the European Medicines Agency website - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/vidprevtyn-beta) - [list of side effects of the Moderna vaccine Spikevax on the European Medicines Agency website - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/spikevax) - [list of side effects of the Janssen vaccine Jcovden on the European Medicines Agency website - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/jcovden-previously-covid-19-vaccine-janssen) - [list of side effects of the AstraZeneca vaccine Vaxzevria on the European Medicines Agency website - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/vaxzevria) ## Reporting side effects If you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA). Your GP, nurse, pharmacist or a family member can also report the side effect to the HPRA. [COVID-19 vaccine adverse reaction report - hpra.ie](https://www.hpra.ie/homepage/about-us/report-an-issue/covid-19-vaccine-adverse-reaction) ### When reporting a side effect Give as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card. The HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have. ## Mpox vaccine If you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis. [Mpox vaccine](https://www2.hse.ie/conditions/mpox/#mpox-vaccine) * This content was fact checked by vaccine experts working in Ireland. Page last reviewed: 16 September 2025 Next review due: 16 September 2028 ## HSE Live - we're here to help Monday to Friday: 8am to 8pm Saturday: 9am to 5pm Sunday: Closed Bank holidays: Closed Freephone: [1800 700 700](tel:1800700700) From outside Ireland: [00 353 1 240 8787](tel:0035312408787)** - [HSE Facebook](https://www.facebook.com/HSElive/) - [HSE Instagram](https://instagram.com/irishhealthservice) - [HSE TikTok](https://www.tiktok.com/@hselive) - [HSE YouTube](https://www.youtube.com/channel/UCoNNhGGAYkdavsSXp1iVzCg) - [HSE LinkedIn](https://ie.linkedin.com/company/health-service-executive) - [Complaints and feedback](https://www2.hse.ie/complaints-feedback/) - [Emergencies](https://www2.hse.ie/services/find-urgent-emergency-care/) - [Cookie settings](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/side-effects/) ## Support links - [Cookie statement](https://www2.hse.ie/cookie-statement/) - [Accessibility](https://www2.hse.ie/accessibility-statement/) - [Privacy statement](https://www2.hse.ie/privacy-statement/) - [Disclaimer](https://www.hse.ie/disclaimer/) © Health Service Executive
Readable Markdown	The COVID-19 vaccine recommended for most people in Ireland is the Comirnaty vaccine (manufactured by Pfizer). It is a mRNA vaccine. ## Comirnaty vaccine side effects Like all medicines, COVID-19 vaccines can cause side effects. Most of these are mild to moderate and do not last long. Not everyone gets side effects. If you are concerned about side effects, contact your GP for advice. Serious side effects, such as a severe allergic reaction, are extremely rare. Your vaccinator is trained to treat allergic reactions. Most side effects from COVID-19 vaccination do not last long. Very common side effects Very common side effects may affect more than 1 in 10 people. These include: - tenderness or swelling in your arm where you had the vaccine - feeling tired - headache - muscle pain - joint pain - diarrhoea - fever (temperature of 38 degrees Celsius or above) - chills Some of these side effects are slightly more frequent in young people age 12 to 15 than in adults. In children age 2 to 4, the most common side effects include: - tenderness or redness at the injection site - feeling tired - [fever (temperature of 38 degrees Celsius or above)](https://www2.hse.ie/conditions/high-temperature/) In children age 6 to 23 months, the most common side effects include: - irritability - sleepiness - loss of appetite - tenderness or redness at the injection site - fever (temperature of 38 degrees Celsius or above) ### Fever after COVID-19 vaccines It is very common to develop a fever (temperature of 38 degrees Celsius or above) after COVID-19 vaccination. This usually happens within 48 hours of getting a vaccine. If you feel uncomfortable, take paracetamol or ibuprofen. Follow the instructions on the box or leaflet. Common side effects Common side effects may affect up to 1 in 10 people. These include: - nausea - vomiting - redness in your arm where you had the vaccine Uncommon side effects Uncommon side effects may affect up to 1 in 100 people. These include: - itchiness where the vaccine was given - dizziness - generalised itchiness - allergic reactions like hives or a rash or swelling in the face - sleeplessness - excessive sweating, night sweats - reduced appetite - lack of energy or feeling unwell - pain in the arm you got the vaccine in Rare side effects Rare side effects may affect up to 1 in 1,000 people. These include: - temporary drooping on 1 side of the face Very rare side effects Very rare side effects may affect up to 1 in 10,000 people. These include: - myocarditis - pericarditis Myocarditis and pericarditis are inflammatory heart conditions. The risk of these very rare conditions is higher in young men. These conditions are more likely to happen after the second dose of the first course of the vaccine. They have mostly been seen within 14 days of getting the vaccine. #### Symptoms of myocarditis and pericarditis Get urgent medical help if you get any of these symptoms in the weeks after your COVID-19 vaccine: - breathlessness - palpitations (a forceful heartbeat that may be irregular) - chest pain Signs of myocarditis in younger children may be more general including: - irritability - vomiting - difficulty feeding - rapid and shallow breathing Extremely rare side effects Other side effects that may happen after a COVID-19 vaccine include: - a skin reaction that causes red spots or patches on the skin - the rash can look like a bull's-eye on a dartboard - unusual feeling in the skin, such as tingling or a crawling feeling - reduced feeling or sensitivity, especially in the skin - heavy menstrual bleeding (period) - this is usually not serious and does not last long ## Ingredients of Comirnaty COVID-19 vaccine The Comirnaty COVID-19 vaccine does not contain eggs, preservatives or latex. You can read more about the vaccine ingredients on the European Medicine Agency's website. [Comirnaty COVID-19 vaccine - ema.europa.eu](https://www.ema.europa.eu/en/medicines/human/EPAR/comirnaty) ## Who should not get this vaccine Most people can safely get the Comirnaty COVID-19 vaccine. Who should not get the Comirnaty COVID-19 vaccine This vaccine is not recommended if you: - had a severe allergic reaction to a previous dose of this vaccine or another mRNA vaccine - had a severe allergic reaction to any of the ingredients in this vaccine - including polyethylene glycol (PEG) - were told by a doctor that you should not get an mRNA vaccine - had a severe allergic reaction after Trometamol (one of the contents in contrast dye used in MRI radiological studies) Talk to your doctor before getting this vaccine if you: - had a severe allergic reaction (anaphylaxis) in the past, including to any other vaccine or medicine - had myocarditis or pericarditis (inflammation of the heart muscle) after a previous dose of any COVID-19 vaccine - have mastocytosis - have a child with a history of [multisystem inflammatory syndrome (MIS-C), also known as PIMS](https://www2.hse.ie/screening-and-vaccinations/covid-19-vaccine/get-the-vaccine/children/#multisystem-inflammatory-syndrome-or-pims) ## What to do if you have a side effect of the COVID-19 vaccine Talk to your GP if you have any side effects. If you have a fever (temperature of 38 degrees Celsius or higher) or aches and pains, you can take paracetamol or ibuprofen to help. If your fever lasts more than 48 hours or if you are still concerned, talk to your GP. If you are pregnant and you have a fever or aches and pains after vaccination, you can take paracetamol. Do not take ibuprofen or aspirin to treat a fever or aches and pains after vaccination in pregnancy. You can report any side effects to the Health Products Regulatory Authority (HPRA) at [hpra.ie](https://www.hpra.ie/). ## Other COVID-19 vaccines The Comirnaty COVID-19 vaccine is an mRNA vaccine. Some people may not be able to get an mRNA vaccine or chose not to get one. In this case, the Nuvaxovid (Novavax) vaccine is usually recommended. ### Nuvaxovid (Novavax) vaccine The Nuvaxovid (Novavax) vaccine is currently not available in Ireland. We are trying to get supplies of the vaccine but we do not know if or when it will become available. You can call HSELive at Freephone [1800 700 700](tel:1800700700) and ask to be contacted when the Nuvaxovid (Novavax) vaccine becomes available. ## Vaccines previously offered Side effects of vaccines previously offered in Ireland ## Reporting side effects If you think you or your child have had a side effect after getting a vaccine, you can report it to the Health Products Regulatory Authority (HPRA). Your GP, nurse, pharmacist or a family member can also report the side effect to the HPRA. [COVID-19 vaccine adverse reaction report - hpra.ie](https://www.hpra.ie/homepage/about-us/report-an-issue/covid-19-vaccine-adverse-reaction) ### When reporting a side effect Give as much information as possible. Include the vaccine batch number if you have it. You'll find this on your vaccine record card. The HPRA cannot provide clinical advice on individual cases. Talk to your doctor or pharmacist about any medical concerns you may have. ## Mpox vaccine If you recently had the mpox vaccine, wait 4 weeks before you get vaccinated with any COVID-19 vaccine. This is a precaution because of the unknown possible risk of myocarditis. [Mpox vaccine](https://www2.hse.ie/conditions/mpox/#mpox-vaccine) *** This content was fact checked by vaccine experts working in Ireland.
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