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  1. www.healthline.com › health › adult-vaccinesHow the Different Types of COVID-19 Vaccines Work - Healthline

    Mar 28, 2022 · A 2021 study of the Sinovac vaccine, called CoronaVac, found that vaccine was only 46.8 percent effective against symptomatic SARS-CoV-2 infection after the second vaccine dose.

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  3. www.who.int › news-room › feature-storiesThe Sinovac-CoronaVac COVID-19 vaccine: What you need to know

    Jun 10, 2022 · To ensure equivalent or favourable immunogenicity or vaccine effectiveness either of the WHO EUL COVID-19 mRNA vaccines (Pfizer or Moderna) or the WHO EUL COVID-19 vectored vaccines (AstraZeneca Vaxzevria/COVISHIELD or Janssen) can be used as a second dose following a first dose with the Sinovac vaccine dependant on product availability.

  4. www.reuters.com › business › healthcare-pharmaceuticalsSinovac regimen gets strong boost from Pfizer, AstraZeneca or J&J...

    Jan 24, 2022 · A third booster dose of a COVID-19 vaccine made by AstraZeneca, Pfizer-BioNTech or Johnson & Johnson increases antibody levels significantly in those who have previously received two doses of...

  5. www.ncbi.nlm.nih.gov › pmc › articlesEvidence on vaccine efficacy and effectiveness - National Center...

    Oct 27, 2021 · The objective of this review is to provide an up-to-date comparative analysis of the characteristics, adverse events, efficacy, effectiveness, and impact of the variants of concern on the following 19 COVID-19 vaccines: mRNA vaccines (BNT16b2, mRNA-1273, CVnCoV), viral vector vaccines (AZD1222, Sputnik V, Sputnik V Light, Ad5-nCoV ...

  6. theconversation.com › what-are-the-sinopharm-and-sinovacWhat are the Sinopharm and Sinovac vaccines? And how effective...

    Jun 21, 2021 · China has administered more than one billion doses of its homegrown COVID-19 vaccines, the majority of which were developed by local companies Sinovac and Sinopharm. So what do we know about...

  7. apps.who.int › iris › bitstreamthe inactivated COVID-19 vaccine, CoronaVac, developed by Sinovac

    Mar 15, 2022 · Vaccine performance. Sinovac-CoronaVac, is an aluminium-hydroxide-adjuvanted, inactivated whole virus vaccine.

  8. www.ncbi.nlm.nih.gov › pmc › articlesUpdate on the effectiveness of COVID-19 vaccines on different...

    Mar 2, 2023 · Another platform of COVID‐19 vaccines is the use of vectors, such as ChAdOx1 nCoV‐19 or AstraZeneca vaccine (AZD1222) which was developed by Oxford University and the pharmaceutical company, AstraZeneca.