We have discussed many times here that no covid-19 vaccine is reliable and we should avoid it.
False. Largest study to date of 1.2 million people confirms Pfizer's vaccine is 94% effective:
https://www.nejm.org/doi/10.1056/NEJMoa2101765This probably really does have some meaning to somebody somewhere. But by the time we figure out what the meaning is, and compare it with all the sideways potential and possible meanings, it'l be the 25th century.
Results
Each study group included 596,618 persons. Estimated vaccine effectiveness for the study outcomes at days 14 through 20 after the first dose and at 7 or more days after the second dose was as follows: for documented infection, 46% (95% confidence interval [CI], 40 to 51) and 92% (95% CI, 88 to 95); for symptomatic Covid-19, 57% (95% CI, 50 to 63) and 94% (95% CI, 87 to 98); for hospitalization, 74% (95% CI, 56 to 86) and 87% (95% CI, 55 to 100); and for severe disease, 62% (95% CI, 39 to 80) and 92% (95% CI, 75 to 100), respectively. Estimated effectiveness in preventing death from Covid-19 was 72% (95% CI, 19 to 100) for days 14 through 20 after the first dose. Estimated effectiveness in specific subpopulations assessed for documented infection and symptomatic Covid-19 was consistent across age groups, with potentially slightly lower effectiveness in persons with multiple coexisting conditions.
