🕷️ Crawler Inspector

URL Lookup

Direct Parameter Lookup

Raw Queries and Responses

1. Shard Calculation

Query:

Response:

Calculated Shard: 192 (from laksa037)

2. Crawled Status Check

Query:

curl -X POST \
  'http://laksa192.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://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/\')), getAhrefsUnparsedNoserviceFromURL(\'https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/\'))) FORMAT JSONEachRow'

Response:

{"found_url":"https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/","crawl_time":1770715746,"first_indexed_time":1649856545,"http_code":200,"src_unparsed":"sg,mothership!\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/ s443","src_root_hash":"22058621854342192","history_drop_reason":null,"meta_title":"Moderna > Pfizer > Sinopharm > Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease - Mothership.SG - News from Singapore, Asia and around the world","meta_descriptions":["Those who got the Sinovac vaccine were found to be 2.37 times more likely to get Covid-19 compared to those who got the Pfizer vaccine."],"attrs_boilerpipe_text":"Follow us on Telegram for the latest updates: https:\/\/t.me\/mothershipsg A new Singapore study comparing the effectiveness of Covid-19 vaccines against infection and severe disease was published on Apr. 12, 2022.\n The study set out to compare the four available vaccines in Singapore, looking into other studies' findings that mRNA vaccines have higher efficacy than non-mRNA vaccines.\n The four vaccines are the  Pfizer-BioNTech\/Comirnaty  vaccine and the  Moderna  vaccine, which are mRNA vaccines, as well as the  Sinovac-CoronaVac  vaccine and the  Sinopharm  vaccine, which are non-mRNA vaccines that use an inactivated virus to trigger an immune response.\n The Pfizer vaccine was used as a reference as it was most commonly used in Singapore.\n Findings Here are the results of the study on how well the vaccines protected against  Covid-19 infection :\n Those who received  Sinovac-CoronaVac : 2.37 times more likely to be infected than those who received Pfizer Those who received  Sinopharm : 1.62 times more likely to be infected than those who received Pfizer Those who received  Moderna : 0.84 times as likely to be infected than those who received Pfizer And here are the results of the study on how well the vaccines protected against  severe disease arising from Covid-19 infection :\n Those who received  Sinovac-CoronaVac : 4.59 times more likely to have severe disease than those who received Pfizer Those who received  Sinopharm : 1.62 times more likely to have severe disease than those who received Pfizer Those who received  Moderna : 0.42 times as likely to have severe disease than those who received Pfizer \"Severe disease\" was defined as requiring oxygen supplementation in a hospital, admission to an intensive care unit, or death.\n Comparing vaccines in the same population \"We aim to compare the mRNA and inactivated whole virus vaccines in the same population as the findings will be useful for guiding policy recommendations to prevent infection and reduce strain on the healthcare system,\" said the study's authors in the introduction.\n The study looked at the incidence of Covid-19 infection and severe disease from Oct. 1 to Nov. 21, 2021, and made use of official databases maintained by Singapore's Ministry of Health (MOH).\n Which individuals were subjects of the study? Those who were partially vaccinated, boosted with a third dose, or previously infected were excluded from the study.\n It excluded those who got their second dose within 14 days of the study period, to allow for sufficient immune response, as well as those who received their second dose more than 120 days before, to control for waning of immunity.\n The study was also restricted to individuals aged 20 and above, as those under 18 were not allowed to receive the Moderna and Sinovac-CoronaVac vaccines.\n Conclusion: Inactivated virus vaccines offer lower protection The study's authors concluded that those who received two doses of inactivated whole virus vaccines had lower protection against Covid-19.\n Nevertheless, they said that \"both mRNA vaccines and inactivated whole virus vaccines provide sufficient protection against Covid-19 severe disease\", and affirmed the importance of vaccination as \"a key strategy\" in the Covid-19 pandemic.\n You can access the study's  manuscript here .\n Related stories  Pfizer > Sinopharm > Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease' style='min-height: 350px;' clip: rect(1px, 1px, 1px, 1px);' src='\/2021\/02\/covid-19-vaccines-the-difference-between-pfizer-sinovac\/embed\/' width='600' frameborder='0' marginwidth='0' marginheight='0' scrolling='no'> Top images via  Nafis Fuad Ayon on Wikipedia  and via Unsplash Follow and listen to our podcast here","attrs_markdown":"![](https:\/\/www.facebook.com\/tr?id=112356165937356&ev=PageView&noscript=1)\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/mothership-logo-white.svg)](https:\/\/mothership.sg\/)  ![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/menu-hamburger-white.svg) ![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/menu-cross-white.svg)\n\n- [News](https:\/\/mothership.sg\/category\/news\/)\n- [Babelfish](https:\/\/babelfish.mothership.sg\/)\n- [Lifestyle](https:\/\/mothership.sg\/category\/lifestyle\/)\n  - [Lifestyle News](https:\/\/mothership.sg\/category\/lifestyle\/lifestyle-news)\n  - [Hot Deals](https:\/\/mothership.sg\/category\/lifestyle\/hot-deals\/)\n  - [Trending](https:\/\/mothership.sg\/category\/lifestyle\/trending\/)\n  - [Drama](https:\/\/mothership.sg\/category\/lifestyle\/drama\/)\n  - [Things To Eat](https:\/\/mothership.sg\/category\/lifestyle\/things-to-eat\/)\n  - [Things To Do](https:\/\/mothership.sg\/category\/lifestyle\/things-to-do\/)\n  - [Stories Of Us](https:\/\/mothership.sg\/category\/lifestyle\/stories-of-us\/)\n  - [Celebrity](https:\/\/mothership.sg\/category\/lifestyle\/celebrity\/)\n  - [Heartwarming](https:\/\/mothership.sg\/category\/lifestyle\/heartwarming\/)\n  - [Travel](https:\/\/mothership.sg\/category\/lifestyle\/travel\/)\n- [Videos](https:\/\/mothership.sg\/videos)\n- [Abroad](https:\/\/mothership.sg\/category\/abroad\/)\n- [Weekend](https:\/\/mothership.sg\/tag\/ms-weekend)\n- [Environment](https:\/\/mothership.sg\/category\/environment)\n- [Careers](https:\/\/www.mothership.sg\/careers\/)\n- [\\+ More](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n  - [Parliament](https:\/\/mothership.sg\/category\/parliament\/)\n  - [Perspectives](https:\/\/mothership.sg\/category\/perspectives\/)\n  - [History](https:\/\/mothership.sg\/category\/community\/history\/)\n  - [Covid-19](https:\/\/mothership.sg\/tag\/covid-19)\n\n- [News](https:\/\/mothership.sg\/category\/news\/)\n- [Babelfish](https:\/\/babelfish.mothership.sg\/)\n- [Lifestyle](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n  - [Lifestyle News](https:\/\/mothership.sg\/category\/lifestyle\/lifestyle-news)\n  - [Hot Deals](https:\/\/mothership.sg\/category\/lifestyle\/hot-deals\/)\n  - [Trending](https:\/\/mothership.sg\/category\/lifestyle\/trending\/)\n  - [Drama](https:\/\/mothership.sg\/category\/lifestyle\/drama\/)\n  - [Things To Eat](https:\/\/mothership.sg\/category\/lifestyle\/things-to-eat\/)\n  - [Things To Do](https:\/\/mothership.sg\/category\/lifestyle\/things-to-do\/)\n  - [Stories Of Us](https:\/\/mothership.sg\/category\/lifestyle\/stories-of-us\/)\n  - [Celebrity](https:\/\/mothership.sg\/category\/lifestyle\/celebrity\/)\n  - [Heartwarming](https:\/\/mothership.sg\/category\/lifestyle\/heartwarming\/)\n  - [Travel](https:\/\/mothership.sg\/category\/lifestyle\/travel\/)\n- [Videos](https:\/\/mothership.sg\/videos)\n- [Abroad](https:\/\/mothership.sg\/category\/abroad\/)\n- [Weekend](https:\/\/mothership.sg\/tag\/ms-weekend)\n- [Environment](https:\/\/mothership.sg\/category\/environment)\n- [Careers](https:\/\/www.mothership.sg\/careers\/)\n- [\\+ More](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n  - [Parliament](https:\/\/mothership.sg\/category\/parliament\/)\n  - [Perspectives](https:\/\/mothership.sg\/category\/perspectives\/)\n  - [History](https:\/\/mothership.sg\/category\/community\/history\/)\n  - [Covid-19](https:\/\/mothership.sg\/tag\/covid-19\/)\n\n[News](https:\/\/mothership.sg\/category\/news\/)\n\n[Babelfish](https:\/\/babelfish.mothership.sg\/)\n\n[Lifestyle](https:\/\/mothership.sg\/category\/lifestyle\/)\n- [Lifestyle News](https:\/\/mothership.sg\/category\/lifestyle\/lifestyle-news\/)\n- [Hot Deals](https:\/\/mothership.sg\/category\/lifestyle\/hot-deals\/)\n- [Trending](https:\/\/mothership.sg\/category\/lifestyle\/trending\/)\n- [Drama](https:\/\/mothership.sg\/category\/lifestyle\/drama\/)\n- [Things To Eat](https:\/\/mothership.sg\/category\/lifestyle\/things-to-eat\/)\n- [Things To Do](https:\/\/mothership.sg\/category\/lifestyle\/things-to-do\/)\n- [Stories Of Us](https:\/\/mothership.sg\/category\/lifestyle\/stories-of-us\/)\n- [Celebrity](https:\/\/mothership.sg\/category\/lifestyle\/celebrity\/)\n- [Heartwarming](https:\/\/mothership.sg\/category\/lifestyle\/heartwarming\/)\n- [Travel](https:\/\/mothership.sg\/category\/lifestyle\/travel\/)\n\n[Videos](https:\/\/mothership.sg\/videos)\n\n[Abroad](https:\/\/mothership.sg\/category\/abroad\/)\n\n[Weekend](https:\/\/mothership.sg\/tag\/ms-weekend)\n\n[Environment](https:\/\/mothership.sg\/category\/environment)\n\n[Careers](https:\/\/mothership.sg\/careers\/)\n\n[\\+ More](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n- [Parliament](https:\/\/mothership.sg\/category\/parliament\/)\n- [Perspectives](https:\/\/mothership.sg\/category\/perspectives\/)\n- [History](https:\/\/mothership.sg\/category\/community\/history\/)\n- [Covid-19](https:\/\/www.mothership.sg\/tag\/covid-19)\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-red.svg)Search]()   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-white.svg)Search]()\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-red.svg)Search]()\n\n[News](https:\/\/mothership.sg\/category\/news\/)\n\n[Babelfish](https:\/\/babelfish.mothership.sg\/)\n\n[Covid-19](https:\/\/www.mothership.sg\/tag\/covid-19)\n\n[Lifestyle](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n- [Lifestyle News](https:\/\/mothership.sg\/category\/lifestyle\/lifestyle-news\/)\n- [Hot Deals](https:\/\/mothership.sg\/category\/lifestyle\/hot-deals\/)\n- [Trending](https:\/\/mothership.sg\/category\/lifestyle\/trending\/)\n- [Drama](https:\/\/mothership.sg\/category\/lifestyle\/drama\/)\n- [Things To Eat](https:\/\/mothership.sg\/category\/lifestyle\/things-to-eat\/)\n- [Things To Do](https:\/\/mothership.sg\/category\/lifestyle\/things-to-do\/)\n- [Stories Of Us](https:\/\/mothership.sg\/category\/lifestyle\/stories-of-us\/)\n- [Celebrity](https:\/\/mothership.sg\/category\/lifestyle\/celebrity\/)\n- [Heartwarming](https:\/\/mothership.sg\/category\/lifestyle\/heartwarming\/)\n- [Travel](https:\/\/mothership.sg\/category\/lifestyle\/travel\/)\n\n[Videos](https:\/\/mothership.sg\/videos)\n\n[Abroad](https:\/\/mothership.sg\/category\/abroad\/)\n\n[Weekend](https:\/\/mothership.sg\/tag\/ms-weekend)\n\n[Environment](https:\/\/mothership.sg\/category\/environment)\n\n[\\+ More](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n- [Parliament](https:\/\/mothership.sg\/category\/parliament\/)\n- [Perspectives](https:\/\/mothership.sg\/category\/perspectives\/)\n- [History](https:\/\/mothership.sg\/category\/community\/history\/)\n- [Covid-19](https:\/\/mothership.sg\/tag\/covid-19\/)\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-red.svg)Search]()   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-white.svg)Search]()\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/search-red.svg)Search]()\n\n[← Back](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n\nNigel Chua\n\n# Moderna \\> Pfizer \\> Sinopharm \\> Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease\nThose who got the Sinovac vaccine were found to be 2.37 times more likely to get Covid-19 compared to those who got the Pfizer vaccine.\n\n[Nigel Chua](https:\/\/mothership.sg\/author\/nigel-chua)  \\|   ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png) April 13, 2022, 08:22 PM\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/fb-icon.svg)](https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/tw-icon.svg)](https:\/\/twitter.com\/share?text=Moderna%20>%20Pfizer%20>%20Sinopharm%20>%20Sinovac:%20S'pore%20study%20on%20vaccines'%20effectiveness%20against%20infection%20&%20severe%20disease&url=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/whats-icon.svg)](whatsapp:\/\/send?text=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n\n![](https:\/\/static.mothership.sg\/1\/2022\/04\/vaccines.jpg)\n\n## [Events](https:\/\/mothership.sg\/event)\n#\n![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)  -\n\n![](https:\/\/mothership.sg\/assets\/images\/icons\/drop-pin.png)\n\n> ***[Follow us on Telegram for the latest updates: https:\/\/t.me\/mothershipsg](https:\/\/t.me\/mothershipsg)***\n\nA new Singapore study comparing the effectiveness of Covid-19 vaccines against infection and severe disease was published on Apr. 12, 2022.\n\nThe study set out to compare the four available vaccines in Singapore, looking into other studies' findings that mRNA vaccines have higher efficacy than non-mRNA vaccines.\n\nThe four vaccines are the **Pfizer-BioNTech\/Comirnaty** vaccine and the **Moderna** vaccine, which are mRNA vaccines, as well as the **Sinovac-CoronaVac** vaccine and the **Sinopharm** vaccine, which are non-mRNA vaccines that use an inactivated virus to trigger an immune response.\n\nThe Pfizer vaccine was used as a reference as it was most commonly used in Singapore.\n\n## Findings\nHere are the results of the study on how well the vaccines protected against **Covid-19 infection**:\n\n- Those who received **Sinovac-CoronaVac**: 2.37 times more likely to be infected than those who received Pfizer\n- Those who received **Sinopharm**: 1.62 times more likely to be infected than those who received Pfizer\n- Those who received **Moderna**: 0.84 times as likely to be infected than those who received Pfizer\n\nAnd here are the results of the study on how well the vaccines protected against **severe disease arising from Covid-19 infection**:\n\n- Those who received **Sinovac-CoronaVac**: 4.59 times more likely to have severe disease than those who received Pfizer\n- Those who received **Sinopharm**: 1.62 times more likely to have severe disease than those who received Pfizer\n- Those who received **Moderna**: 0.42 times as likely to have severe disease than those who received Pfizer\n\n\"Severe disease\" was defined as requiring oxygen supplementation in a hospital, admission to an intensive care unit, or death.\n\n## Comparing vaccines in the same population\n\"We aim to compare the mRNA and inactivated whole virus vaccines in the same population as the findings will be useful for guiding policy recommendations to prevent infection and reduce strain on the healthcare system,\" said the study's authors in the introduction.\n\nThe study looked at the incidence of Covid-19 infection and severe disease from Oct. 1 to Nov. 21, 2021, and made use of official databases maintained by Singapore's Ministry of Health (MOH).\n\n### Which individuals were subjects of the study?\nThose who were partially vaccinated, boosted with a third dose, or previously infected were excluded from the study.\n\nIt excluded those who got their second dose within 14 days of the study period, to allow for sufficient immune response, as well as those who received their second dose more than 120 days before, to control for waning of immunity.\n\nThe study was also restricted to individuals aged 20 and above, as those under 18 were not allowed to receive the Moderna and Sinovac-CoronaVac vaccines.\n\n## Conclusion: Inactivated virus vaccines offer lower protection\nThe study's authors concluded that those who received two doses of inactivated whole virus vaccines had lower protection against Covid-19.\n\nNevertheless, they said that \"both mRNA vaccines and inactivated whole virus vaccines provide sufficient protection against Covid-19 severe disease\", and affirmed the importance of vaccination as \"a key strategy\" in the Covid-19 pandemic.\n\nYou can access the study's [manuscript here](https:\/\/pubmed.ncbi.nlm.nih.gov\/35412612\/).\n\n## Related stories\nPfizer \\> Sinopharm \\> Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease' style='min-height: 350px;' clip: rect(1px, 1px, 1px, 1px);' src='\/2021\/02\/covid-19-vaccines-the-difference-between-pfizer-sinovac\/embed\/' width='600' frameborder='0' marginwidth='0' marginheight='0' scrolling='no'\\>\n\n*Top images via [Nafis Fuad Ayon on Wikipedia](https:\/\/en.wikipedia.org\/wiki\/Sinopharm_BIBP_COVID-19_vaccine#\/media\/File:Sinopharm_BBIBP-CorV_COVID-19_vaccine_vial_from_Nikli,_Bangladesh.jpg) and via Unsplash*\n\n***Follow and listen to our podcast here***\n\n[![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/fb-icon.svg)](https:\/\/www.facebook.com\/sharer\/sharer.php?u=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/tw-icon.svg)](https:\/\/twitter.com\/share?text=Moderna%20>%20Pfizer%20>%20Sinopharm%20>%20Sinovac:%20S'pore%20study%20on%20vaccines'%20effectiveness%20against%20infection%20&%20severe%20disease&url=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)   [![](https:\/\/mothership.sg\/assets\/images\/icons\/svg\/whats-icon.svg)](whatsapp:\/\/send?text=https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n\nIf you like what you read, follow us on [Facebook](https:\/\/www.facebook.com\/MothershipSG), [Instagram](https:\/\/instagram.com\/mothershipsg), [Twitter](https:\/\/twitter.com\/MothershipSG) and [Telegram](https:\/\/t.me\/mothershipsg) to get the latest updates.\n\n## More Stories:\n[Paradigm Mall JB offering RM50 (S\\$14.45) vouchers for any traveller who shows passport at concierge All you have to do is show your passport and sign up for the \"WCT Buddy\" app. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 06:24 PM](https:\/\/mothership.sg\/2023\/07\/paradigm-mall-johor-bahru-vouchers\/)\n\n[Tributes pour in for late Law Society President Adrian Tan, accomplished lawyer & witty writer Several Singaporeans also paid tribute to the impact of his books on their lives. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 04:28 PM](https:\/\/mothership.sg\/2023\/07\/adrian-tan-tributes\/)\n\n[Kit Chan to perform 'Home', 1998 S'pore National Day song, at free concert on Aug. 5, 2023 Nostalgia. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 03:38 PM](https:\/\/mothership.sg\/2023\/07\/kit-chan-home-national-day-2023\/)\n\n[Confused horse spotted trotting along cars on BKE, escorted to safety by LTA officer Like a fish out of water. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 03:21 PM](https:\/\/mothership.sg\/2023\/07\/confused-horse-spotted-trotting-along-cars-on-bke-escorted-to-safety-by-lta-officer\/)\n\n[Man, 43, on trial for murdering daughter, 5, after months of confining her naked in toilet with son, 4 The man disposed of items linked to the girl's death, and told police she hit her head on a slide. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 03:07 PM](https:\/\/mothership.sg\/2023\/07\/murder-daughter-confined-naked-toilet-abuse\/)\n\n[S'pore bus services to JB now available on Grab & Shopee ranging from S\\$3 to S\\$11 More options for weekend getaways. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 01:02 PM](https:\/\/mothership.sg\/2023\/07\/singapore-jb-bus-service-grab-shopee\/)\n\n[South Korean actor Ji Chang Wook to be in S'pore on Jul. 13 for Giorgio Armani Mare pop-up That smoulder. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 11:46 AM](https:\/\/mothership.sg\/2023\/07\/south-korean-ji-chang-wook-singapore\/)\n\n[Lorry swerves into 5 motorcycles & car on SLE towards BKE, 5 injured The motorcyclists, aged 24 to 33, were injured and conveyed conscious to hospital. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 11:40 AM](https:\/\/mothership.sg\/2023\/07\/lorry-swerve-motorcycles-sle-bke\/)\n\n[Eminent S'pore economist Lim Chong Yah dies at age 91 RIP. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 11:39 AM](https:\/\/mothership.sg\/2023\/07\/lim-chong-yah-dies\/)\n\n[Firsthand from Dakota: Retired hawker, 70, now bombastic magician full of main character energy He used to sell noodles. Now he's spinning umbrellas on the tip of a ballpoint pen. ![](https:\/\/mothership.sg\/assets\/images\/icons\/clock.png)July 09, 2023, 09:40 AM](https:\/\/mothership.sg\/2023\/07\/tok-tok-man-umbrella-tricks\/)\n\n[Load more stories](https:\/\/mothership.sg\/2022\/04\/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines\/)\n\n[About](https:\/\/mothership.sg\/about-us) \\| [Advertise with us](https:\/\/mothership.sg\/about-us#sales) \\| [Contact us](https:\/\/mothership.sg\/about-us#contact-us) \\| [We Are Hiring](https:\/\/mothership.sg\/careers) \\| [Privacy policy](https:\/\/mothership.sg\/privacy-policy\/)\n\nCopyright © 2020 Mothership. All rights reserved.","attrs_readable_markdown":null,"meta_canonical":null}

3. Robots.txt Check

Query:

Response:

4. Spam/Ban Check

Query:

Response:

5. Seen Status Check

ℹ️ Skipped - page is already crawled

📄

INDEXABLE

✅

CRAWLED

2 months ago

🤖

ROBOTS ALLOWED

Page Info Filters

Filter	Status	Condition	Details
HTTP status	PASS	`download_http_code = 200`	HTTP 200
Age cutoff	PASS	`download_stamp > now() - 6 MONTH`	2.1 months ago
History drop	PASS	`isNull(history_drop_reason)`	No drop reason
Spam/ban	PASS	`fh_dont_index != 1 AND ml_spam_score = 0`	ml_spam_score=0
Canonical	PASS	`meta_canonical IS NULL OR = '' OR = src_unparsed`	Not set

Page Details

Property	Value
URL	https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/
Last Crawled	2026-02-10 09:29:06 (2 months ago)
First Indexed	2022-04-13 13:29:05 (4 years ago)
HTTP Status Code	200
Meta Title	Moderna > Pfizer > Sinopharm > Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease - Mothership.SG - News from Singapore, Asia and around the world
Meta Description	Those who got the Sinovac vaccine were found to be 2.37 times more likely to get Covid-19 compared to those who got the Pfizer vaccine.
Meta Canonical	null
Boilerpipe Text	Follow us on Telegram for the latest updates: https://t.me/mothershipsg A new Singapore study comparing the effectiveness of Covid-19 vaccines against infection and severe disease was published on Apr. 12, 2022. The study set out to compare the four available vaccines in Singapore, looking into other studies' findings that mRNA vaccines have higher efficacy than non-mRNA vaccines. The four vaccines are the Pfizer-BioNTech/Comirnaty vaccine and the Moderna vaccine, which are mRNA vaccines, as well as the Sinovac-CoronaVac vaccine and the Sinopharm vaccine, which are non-mRNA vaccines that use an inactivated virus to trigger an immune response. The Pfizer vaccine was used as a reference as it was most commonly used in Singapore. Findings Here are the results of the study on how well the vaccines protected against Covid-19 infection : Those who received Sinovac-CoronaVac : 2.37 times more likely to be infected than those who received Pfizer Those who received Sinopharm : 1.62 times more likely to be infected than those who received Pfizer Those who received Moderna : 0.84 times as likely to be infected than those who received Pfizer And here are the results of the study on how well the vaccines protected against severe disease arising from Covid-19 infection : Those who received Sinovac-CoronaVac : 4.59 times more likely to have severe disease than those who received Pfizer Those who received Sinopharm : 1.62 times more likely to have severe disease than those who received Pfizer Those who received Moderna : 0.42 times as likely to have severe disease than those who received Pfizer "Severe disease" was defined as requiring oxygen supplementation in a hospital, admission to an intensive care unit, or death. Comparing vaccines in the same population "We aim to compare the mRNA and inactivated whole virus vaccines in the same population as the findings will be useful for guiding policy recommendations to prevent infection and reduce strain on the healthcare system," said the study's authors in the introduction. The study looked at the incidence of Covid-19 infection and severe disease from Oct. 1 to Nov. 21, 2021, and made use of official databases maintained by Singapore's Ministry of Health (MOH). Which individuals were subjects of the study? Those who were partially vaccinated, boosted with a third dose, or previously infected were excluded from the study. It excluded those who got their second dose within 14 days of the study period, to allow for sufficient immune response, as well as those who received their second dose more than 120 days before, to control for waning of immunity. The study was also restricted to individuals aged 20 and above, as those under 18 were not allowed to receive the Moderna and Sinovac-CoronaVac vaccines. Conclusion: Inactivated virus vaccines offer lower protection The study's authors concluded that those who received two doses of inactivated whole virus vaccines had lower protection against Covid-19. Nevertheless, they said that "both mRNA vaccines and inactivated whole virus vaccines provide sufficient protection against Covid-19 severe disease", and affirmed the importance of vaccination as "a key strategy" in the Covid-19 pandemic. You can access the study's manuscript here . Related stories Pfizer > Sinopharm > Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease' style='min-height: 350px;' clip: rect(1px, 1px, 1px, 1px);' src='/2021/02/covid-19-vaccines-the-difference-between-pfizer-sinovac/embed/' width='600' frameborder='0' marginwidth='0' marginheight='0' scrolling='no'> Top images via Nafis Fuad Ayon on Wikipedia and via Unsplash Follow and listen to our podcast here
Markdown	![](https://www.facebook.com/tr?id=112356165937356&ev=PageView&noscript=1) [![](https://mothership.sg/assets/images/icons/svg/mothership-logo-white.svg)](https://mothership.sg/) ![](https://mothership.sg/assets/images/icons/svg/menu-hamburger-white.svg) ![](https://mothership.sg/assets/images/icons/svg/menu-cross-white.svg) - [News](https://mothership.sg/category/news/) - [Babelfish](https://babelfish.mothership.sg/) - [Lifestyle](https://mothership.sg/category/lifestyle/) - [Lifestyle News](https://mothership.sg/category/lifestyle/lifestyle-news) - [Hot Deals](https://mothership.sg/category/lifestyle/hot-deals/) - [Trending](https://mothership.sg/category/lifestyle/trending/) - [Drama](https://mothership.sg/category/lifestyle/drama/) - [Things To Eat](https://mothership.sg/category/lifestyle/things-to-eat/) - [Things To Do](https://mothership.sg/category/lifestyle/things-to-do/) - [Stories Of Us](https://mothership.sg/category/lifestyle/stories-of-us/) - [Celebrity](https://mothership.sg/category/lifestyle/celebrity/) - [Heartwarming](https://mothership.sg/category/lifestyle/heartwarming/) - [Travel](https://mothership.sg/category/lifestyle/travel/) - [Videos](https://mothership.sg/videos) - [Abroad](https://mothership.sg/category/abroad/) - [Weekend](https://mothership.sg/tag/ms-weekend) - [Environment](https://mothership.sg/category/environment) - [Careers](https://www.mothership.sg/careers/) - [\+ More](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Parliament](https://mothership.sg/category/parliament/) - [Perspectives](https://mothership.sg/category/perspectives/) - [History](https://mothership.sg/category/community/history/) - [Covid-19](https://mothership.sg/tag/covid-19) - [News](https://mothership.sg/category/news/) - [Babelfish](https://babelfish.mothership.sg/) - [Lifestyle](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Lifestyle News](https://mothership.sg/category/lifestyle/lifestyle-news) - [Hot Deals](https://mothership.sg/category/lifestyle/hot-deals/) - [Trending](https://mothership.sg/category/lifestyle/trending/) - [Drama](https://mothership.sg/category/lifestyle/drama/) - [Things To Eat](https://mothership.sg/category/lifestyle/things-to-eat/) - [Things To Do](https://mothership.sg/category/lifestyle/things-to-do/) - [Stories Of Us](https://mothership.sg/category/lifestyle/stories-of-us/) - [Celebrity](https://mothership.sg/category/lifestyle/celebrity/) - [Heartwarming](https://mothership.sg/category/lifestyle/heartwarming/) - [Travel](https://mothership.sg/category/lifestyle/travel/) - [Videos](https://mothership.sg/videos) - [Abroad](https://mothership.sg/category/abroad/) - [Weekend](https://mothership.sg/tag/ms-weekend) - [Environment](https://mothership.sg/category/environment) - [Careers](https://www.mothership.sg/careers/) - [\+ More](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Parliament](https://mothership.sg/category/parliament/) - [Perspectives](https://mothership.sg/category/perspectives/) - [History](https://mothership.sg/category/community/history/) - [Covid-19](https://mothership.sg/tag/covid-19/) [News](https://mothership.sg/category/news/) [Babelfish](https://babelfish.mothership.sg/) [Lifestyle](https://mothership.sg/category/lifestyle/) - [Lifestyle News](https://mothership.sg/category/lifestyle/lifestyle-news/) - [Hot Deals](https://mothership.sg/category/lifestyle/hot-deals/) - [Trending](https://mothership.sg/category/lifestyle/trending/) - [Drama](https://mothership.sg/category/lifestyle/drama/) - [Things To Eat](https://mothership.sg/category/lifestyle/things-to-eat/) - [Things To Do](https://mothership.sg/category/lifestyle/things-to-do/) - [Stories Of Us](https://mothership.sg/category/lifestyle/stories-of-us/) - [Celebrity](https://mothership.sg/category/lifestyle/celebrity/) - [Heartwarming](https://mothership.sg/category/lifestyle/heartwarming/) - [Travel](https://mothership.sg/category/lifestyle/travel/) [Videos](https://mothership.sg/videos) [Abroad](https://mothership.sg/category/abroad/) [Weekend](https://mothership.sg/tag/ms-weekend) [Environment](https://mothership.sg/category/environment) [Careers](https://mothership.sg/careers/) [\+ More](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Parliament](https://mothership.sg/category/parliament/) - [Perspectives](https://mothership.sg/category/perspectives/) - [History](https://mothership.sg/category/community/history/) - [Covid-19](https://www.mothership.sg/tag/covid-19) [![](https://mothership.sg/assets/images/icons/svg/search-red.svg)Search]() [![](https://mothership.sg/assets/images/icons/svg/search-white.svg)Search]() [![](https://mothership.sg/assets/images/icons/svg/search-red.svg)Search]() [News](https://mothership.sg/category/news/) [Babelfish](https://babelfish.mothership.sg/) [Covid-19](https://www.mothership.sg/tag/covid-19) [Lifestyle](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Lifestyle News](https://mothership.sg/category/lifestyle/lifestyle-news/) - [Hot Deals](https://mothership.sg/category/lifestyle/hot-deals/) - [Trending](https://mothership.sg/category/lifestyle/trending/) - [Drama](https://mothership.sg/category/lifestyle/drama/) - [Things To Eat](https://mothership.sg/category/lifestyle/things-to-eat/) - [Things To Do](https://mothership.sg/category/lifestyle/things-to-do/) - [Stories Of Us](https://mothership.sg/category/lifestyle/stories-of-us/) - [Celebrity](https://mothership.sg/category/lifestyle/celebrity/) - [Heartwarming](https://mothership.sg/category/lifestyle/heartwarming/) - [Travel](https://mothership.sg/category/lifestyle/travel/) [Videos](https://mothership.sg/videos) [Abroad](https://mothership.sg/category/abroad/) [Weekend](https://mothership.sg/tag/ms-weekend) [Environment](https://mothership.sg/category/environment) [\+ More](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) - [Parliament](https://mothership.sg/category/parliament/) - [Perspectives](https://mothership.sg/category/perspectives/) - [History](https://mothership.sg/category/community/history/) - [Covid-19](https://mothership.sg/tag/covid-19/) [![](https://mothership.sg/assets/images/icons/svg/search-red.svg)Search]() [![](https://mothership.sg/assets/images/icons/svg/search-white.svg)Search]() [![](https://mothership.sg/assets/images/icons/svg/search-red.svg)Search]() [← Back](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) Nigel Chua # Moderna \> Pfizer \> Sinopharm \> Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease Those who got the Sinovac vaccine were found to be 2.37 times more likely to get Covid-19 compared to those who got the Pfizer vaccine. [Nigel Chua](https://mothership.sg/author/nigel-chua) \\| ![](https://mothership.sg/assets/images/icons/clock.png) April 13, 2022, 08:22 PM [![](https://mothership.sg/assets/images/icons/svg/fb-icon.svg)](https://www.facebook.com/sharer/sharer.php?u=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) [![](https://mothership.sg/assets/images/icons/svg/tw-icon.svg)](https://twitter.com/share?text=Moderna%20>%20Pfizer%20>%20Sinopharm%20>%20Sinovac:%20S'pore%20study%20on%20vaccines'%20effectiveness%20against%20infection%20&%20severe%20disease&url=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) [![](https://mothership.sg/assets/images/icons/svg/whats-icon.svg)](whatsapp://send?text=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) ![](https://static.mothership.sg/1/2022/04/vaccines.jpg) ## [Events](https://mothership.sg/event) # ![](https://mothership.sg/assets/images/icons/clock.png) - ![](https://mothership.sg/assets/images/icons/drop-pin.png) > *[Follow us on Telegram for the latest updates: https://t.me/mothershipsg](https://t.me/mothershipsg)* A new Singapore study comparing the effectiveness of Covid-19 vaccines against infection and severe disease was published on Apr. 12, 2022. The study set out to compare the four available vaccines in Singapore, looking into other studies' findings that mRNA vaccines have higher efficacy than non-mRNA vaccines. The four vaccines are the Pfizer-BioNTech/Comirnaty vaccine and the Moderna vaccine, which are mRNA vaccines, as well as the Sinovac-CoronaVac vaccine and the Sinopharm vaccine, which are non-mRNA vaccines that use an inactivated virus to trigger an immune response. The Pfizer vaccine was used as a reference as it was most commonly used in Singapore. ## Findings Here are the results of the study on how well the vaccines protected against Covid-19 infection: - Those who received Sinovac-CoronaVac: 2.37 times more likely to be infected than those who received Pfizer - Those who received Sinopharm: 1.62 times more likely to be infected than those who received Pfizer - Those who received Moderna: 0.84 times as likely to be infected than those who received Pfizer And here are the results of the study on how well the vaccines protected against severe disease arising from Covid-19 infection: - Those who received Sinovac-CoronaVac: 4.59 times more likely to have severe disease than those who received Pfizer - Those who received Sinopharm: 1.62 times more likely to have severe disease than those who received Pfizer - Those who received Moderna: 0.42 times as likely to have severe disease than those who received Pfizer "Severe disease" was defined as requiring oxygen supplementation in a hospital, admission to an intensive care unit, or death. ## Comparing vaccines in the same population "We aim to compare the mRNA and inactivated whole virus vaccines in the same population as the findings will be useful for guiding policy recommendations to prevent infection and reduce strain on the healthcare system," said the study's authors in the introduction. The study looked at the incidence of Covid-19 infection and severe disease from Oct. 1 to Nov. 21, 2021, and made use of official databases maintained by Singapore's Ministry of Health (MOH). ### Which individuals were subjects of the study? Those who were partially vaccinated, boosted with a third dose, or previously infected were excluded from the study. It excluded those who got their second dose within 14 days of the study period, to allow for sufficient immune response, as well as those who received their second dose more than 120 days before, to control for waning of immunity. The study was also restricted to individuals aged 20 and above, as those under 18 were not allowed to receive the Moderna and Sinovac-CoronaVac vaccines. ## Conclusion: Inactivated virus vaccines offer lower protection The study's authors concluded that those who received two doses of inactivated whole virus vaccines had lower protection against Covid-19. Nevertheless, they said that "both mRNA vaccines and inactivated whole virus vaccines provide sufficient protection against Covid-19 severe disease", and affirmed the importance of vaccination as "a key strategy" in the Covid-19 pandemic. You can access the study's [manuscript here](https://pubmed.ncbi.nlm.nih.gov/35412612/). ## Related stories Pfizer \> Sinopharm \> Sinovac: S'pore study on vaccines' effectiveness against infection & severe disease' style='min-height: 350px;' clip: rect(1px, 1px, 1px, 1px);' src='/2021/02/covid-19-vaccines-the-difference-between-pfizer-sinovac/embed/' width='600' frameborder='0' marginwidth='0' marginheight='0' scrolling='no'\> Top images via [Nafis Fuad Ayon on Wikipedia](https://en.wikipedia.org/wiki/Sinopharm_BIBP_COVID-19_vaccine#/media/File:Sinopharm_BBIBP-CorV_COVID-19_vaccine_vial_from_Nikli,_Bangladesh.jpg) and via Unsplash *Follow and listen to our podcast here* [![](https://mothership.sg/assets/images/icons/svg/fb-icon.svg)](https://www.facebook.com/sharer/sharer.php?u=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) [![](https://mothership.sg/assets/images/icons/svg/tw-icon.svg)](https://twitter.com/share?text=Moderna%20>%20Pfizer%20>%20Sinopharm%20>%20Sinovac:%20S'pore%20study%20on%20vaccines'%20effectiveness%20against%20infection%20&%20severe%20disease&url=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) [![](https://mothership.sg/assets/images/icons/svg/whats-icon.svg)](whatsapp://send?text=https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) If you like what you read, follow us on [Facebook](https://www.facebook.com/MothershipSG), [Instagram](https://instagram.com/mothershipsg), [Twitter](https://twitter.com/MothershipSG) and [Telegram](https://t.me/mothershipsg) to get the latest updates. ## More Stories: [Paradigm Mall JB offering RM50 (S\$14.45) vouchers for any traveller who shows passport at concierge All you have to do is show your passport and sign up for the "WCT Buddy" app. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 06:24 PM](https://mothership.sg/2023/07/paradigm-mall-johor-bahru-vouchers/) [Tributes pour in for late Law Society President Adrian Tan, accomplished lawyer & witty writer Several Singaporeans also paid tribute to the impact of his books on their lives. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 04:28 PM](https://mothership.sg/2023/07/adrian-tan-tributes/) [Kit Chan to perform 'Home', 1998 S'pore National Day song, at free concert on Aug. 5, 2023 Nostalgia. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 03:38 PM](https://mothership.sg/2023/07/kit-chan-home-national-day-2023/) [Confused horse spotted trotting along cars on BKE, escorted to safety by LTA officer Like a fish out of water. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 03:21 PM](https://mothership.sg/2023/07/confused-horse-spotted-trotting-along-cars-on-bke-escorted-to-safety-by-lta-officer/) [Man, 43, on trial for murdering daughter, 5, after months of confining her naked in toilet with son, 4 The man disposed of items linked to the girl's death, and told police she hit her head on a slide. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 03:07 PM](https://mothership.sg/2023/07/murder-daughter-confined-naked-toilet-abuse/) [S'pore bus services to JB now available on Grab & Shopee ranging from S\$3 to S\$11 More options for weekend getaways. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 01:02 PM](https://mothership.sg/2023/07/singapore-jb-bus-service-grab-shopee/) [South Korean actor Ji Chang Wook to be in S'pore on Jul. 13 for Giorgio Armani Mare pop-up That smoulder. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 11:46 AM](https://mothership.sg/2023/07/south-korean-ji-chang-wook-singapore/) [Lorry swerves into 5 motorcycles & car on SLE towards BKE, 5 injured The motorcyclists, aged 24 to 33, were injured and conveyed conscious to hospital. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 11:40 AM](https://mothership.sg/2023/07/lorry-swerve-motorcycles-sle-bke/) [Eminent S'pore economist Lim Chong Yah dies at age 91 RIP. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 11:39 AM](https://mothership.sg/2023/07/lim-chong-yah-dies/) [Firsthand from Dakota: Retired hawker, 70, now bombastic magician full of main character energy He used to sell noodles. Now he's spinning umbrellas on the tip of a ballpoint pen. ![](https://mothership.sg/assets/images/icons/clock.png)July 09, 2023, 09:40 AM](https://mothership.sg/2023/07/tok-tok-man-umbrella-tricks/) [Load more stories](https://mothership.sg/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/) [About](https://mothership.sg/about-us) \\| [Advertise with us](https://mothership.sg/about-us#sales) \\| [Contact us](https://mothership.sg/about-us#contact-us) \\| [We Are Hiring](https://mothership.sg/careers) \\| [Privacy policy](https://mothership.sg/privacy-policy/) Copyright © 2020 Mothership. All rights reserved.
Readable Markdown	null
Shard	192 (laksa)
Root Hash	22058621854342192
Unparsed URL	sg,mothership!/2022/04/moderna-pfizer-sinopharm-sinovac-study-covid-19-vaccines/ s443