Posted by Richard Willet Posted on 10 November 2020

‘Great day for science and humanity’: Pfizer says Covid-19 vaccine more than 90% effective in final trials (How do they know? They say so)

A vaccine being developed by Pfizer has been found to be more than 90 percent effective against Covid-19, the pharmaceutical company said.

The finding was the result of the first independent analysis of any Covid-19 vaccine in phase 3 trials, the final stage before commercial licensing. 

The study found that 94 participants who received the two-dose vaccine were protected against the disease 28 days after their first inoculation.

The American firm developed the jab along with Germany’s BioNTech. The efficacy rate is significantly above the 50 percent effectiveness required by the US Food and Drug Administration for a coronavirus vaccine. 

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