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A Politicized FDA | Public Occurrences, Ep. 13

Sovereign Nations

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Fda's Preprint on Corono Virus Vaccines

Vaccine efficacy two months after dosing says little about just how long vaccine induced immunity will last. The crucial question becomes, what level of effectiveness will the vaccine provide when a person is actually exposed to the virus? Unlike covid vaccines in fluenza, vaccine performance has always been judged over a full season, not a couple of months. In early july, they reported that efficacy against infection and symptomatic disease fell to 64 %. By late july, it had fallen to 39%. This is very low for context. F d a's expectation is of at least 50 % efficacy for any approvable vaccine.

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