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Online Discussion: Tracking new emerging diseases and the next pandemic since 2005; Coronavirus COVID-19 Pandemic Discussion Forum.

HOW SOME VACCINES WORK

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Technophobe View Drop Down
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    Posted: January 19 2021 at 7:51am

By Jonathan Corum and Carl Zimmer

                  

   Researchers are testing 64 coronavirus vaccines in clinical trials on humans. Here are explanations about how nine of the leading vaccines work.


   Messenger RNA Vaccines

   How the Pfizer-BioNTech Vaccine Works

   The vaccine, known as Comirnaty, has been approved or authorized for emergency use in several countries, including the United States. Clinical trials showed the vaccine has an efficacy of 95 percent. 

Full Pfizer vaccine details here


   How Moderna’s Vaccine Works

   The vaccine, known as mRNA-1273, has been authorized for emergency use in the United States, the European Union and other countries. Clinical trials showed the vaccine has an efficacy of 94.5 percent. 

Full Moderna vaccine details here



Adenovirus-Based Vaccines

   How the Oxford-AstraZeneca Vaccine Works

   The vaccine, known as AZD1222 or Covishield, is authorized for emergency use in Britain, India, Mexico and other countries. Clinical trials showed the vaccine has an efficacy of 62 to 90  percent, depending on dosage. 

Full Oxford-AstraZeneca vaccube details here


   How the Johnson & Johnson Vaccine Works

   The vaccine, called Ad26.COV2.S, is in Phase 3 trials and has not been authorized by any country. Trial results are expected in January. 

Full J&J vaccine details here


   How the Gamaleya Vaccine Works

   The vaccine, known as Sputnik V or Gam-Covid-Vac, is a combination of two different Adenoviruses, Ad26 and Ad5. The vaccine is in use in Russia, Belarus and several other countries. A Phase 3 trial showed an efficacy of 91 percent. 

Full Gamaleya vaccine (Sputnic V) details here 



Protein-Based Vaccines

   How the Novavax Vaccine Works

   The vaccine, known as NVX-CoV2373, is in Phase 3 trials. The vaccine has not been authorized by any country. 

Full Novavax vaccine details here



Inactivated Coronavirus Vaccines

   How the Sinopharm Vaccine Works

   The vaccine, known as BBIBP-CorV, is approved in China, Bahrain and the United Arab Emirates. Sinopharm says the vaccine has an efficacy rate of 79.34 percent. 

Full Sinopharm details here


   How the Sinovac Vaccine Works

   阅读简体中文版 · 閱讀繁體中文版

   The vaccine, known as CoronaVac, is authorized for limited use in China. Trials in Brazil found an overall efficacy of just over 50 percent, the minimum threshold set by many regulatory agencies for authorizing a coronavirus vaccine. 

Full Sinovac details here



How Bharat Biotech’s Vaccine Works

   The vaccine, known as Covaxin, is authorized for emergency use in India, despite a lack of published Phase 3 trial results. The vaccine’s efficacy is not yet known. 

How Bharat's vaccine works




Source and a quick prece:   https://www.nytimes.com/interactive/2021/health/how-covid-19-vaccines-work.html?utm_source=pocket-newtab-global-en-GB

Believers don't need proof and sceptics won't accept proof.
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carbon20 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote carbon20 Quote  Post ReplyReply Direct Link To This Post Posted: January 19 2021 at 2:04pm

Thanks for that very important information technophobe,

I am very interested in the J&J vaccine,

Not sure what we getting here yet,

Don't think we have a choice,

 won't  be for a while yet though,

Take care all 😷😉


Everything we hear is an opinion, not a fact. Everything we see is a perspective, not the truth.🖖

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Post Options Post Options   Thanks (0) Thanks(0)   Quote KiwiMum Quote  Post ReplyReply Direct Link To This Post Posted: January 19 2021 at 4:54pm

Originally posted by carbon20 carbon20 wrote:

Thanks for that very important information technophobe,

I am very interested in the J&J vaccine,

Not sure what we getting here yet,

Don't think we have a choice,

 won't  be for a while yet though,

Take care all 😷😉



I'm pretty sure Australia has started to approve the Moderna and Pfizer vaccines and has decided not to approve the Oxford one. In trials published last week they announced that they found the Oxford one to only be about 62 % effective and therefore not good enough. I suspect that we will follow Australia.


You can't fix stupid.
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