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by Adverblessly
1960 days ago
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Quoting from the link you provided: "We demonstrated an effectiveness of 51% of BNT162b2 vaccine against SARS-CoV-2 infection 13-24 days after immunization with the first dose. Immunization with the second dose should be continued to attain the anticipated protection." I.e. if you take only the first dose of the two required then 13 days after taking it you already get an effectiveness of 50%. Therefore they recommend that people take the 2nd dose as prescribed. They don't mention effectiveness one week after the 2nd shot, which is what Israel considers to be immune (i.e. "green passport" status). |
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For severe disease, Pfizer had 4 in the control group, and 1 in the vaccine group. That’s 75% RRR, with a confidence interval that spans 0-100%.
Look at the graphs here and in Pfizer’s. Immunity seems to taper at 12-18 days and stay there. The 2nd vaccine does not seem to confer more immunity - just expected to last longer time. This article looks at more severe disease than Pfizer’s 95% endloint (though possibly not severe as their “severe disease” endpoint - I don’t remember what definition each uses, but just in Israel the “severe” definition has changed several times)