Thread by @sailorrooscout

Fantastic news out of Pfizer this morning!

•91.3% vaccine efficacy observed against COVID-19, measured seven days through up to six months after the second dose

•100% effective in preventing COVID-19 cases in South Africa, where the B.1.351 lineage is prevalent!

Pfizer’s vaccine was 100% effective in preventing severe disease as defined by the U.S. Centers for Disease Control and Prevention and 95.3% effective in preventing severe disease as defined by the U.S. Food and Drug Administration. This is AMAZING.
pfizer.com/news/press-rel…

This does NOT mean the vaccine is only effective for 6 months. It means that at the 6 month mark this level of high protection is still present! Vaccine safety now evaluated in more than 44,000 participants 16 years of age and older, with more than 12,000 vaccinated participants

at least six months follow-up after their second dose. Efficacy was consistent across age, gender, race and ethnicity demographics, and those with a variety of underlying conditions. NO serious safety concerns were observed in participants up to six months after the second dose.

So everyone is on the same page, these are updated topline results of trial participants from their pivotal Phase 3 study through March 13, 2021. Hence they are six months out from their second dose. Again, this DOES NOT mean the vaccine is only effective for six months.

With this data, Pfizer can now seek full approval of their vaccine. According to their CEO, the data confirms the favorable efficacy and safety profile of their vaccine and positions then to submit a Biologics License Application to the U.S. FDA.
6abc.com/pfizer-covid-v…