What We Know Right Now About Omicron and About Boosters

This article shows that the booster shot lowers the risk of death by 90% compared to those who did not receive the booster shot in those 50 years of age or older. R Arbel et al. NEJM 2021; DOI: 10.1056/NEJMoa2115624. Open Access: BNT162b2 Vaccine Booster and Mortality Due to Covid-19

Key Findings:

  • A total of 843,208 participants (50 years and older) met the eligibility criteria, of whom 758,118 (90%) received the booster during the 54-day study period. Death due to Covid-19 occurred in 65 participants in the booster group (0.16 per 100,000 persons per day) and in 137 participants in the nonbooster group (2.98 per 100,000 persons per day). The adjusted hazard ratio for death due to Covid-19 in the booster group, as compared with the nonbooster group, was 0.10 (95% confidence interval, 0.07 to 0.14; P<0.001).

This twitter thread from Ashish Jha provides insight into the current understanding of the Omicron variant.

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