Pfizer will fully vaccinate everyone in a Brazilian city over the age of 12 to study the safety and efficacy of their vaccine. The study will follow participants for up to one year to chart how long protection lasts against Covid-19 and the new variants. nyti.ms/3iKNNyA
Pfizer will vaccinate entire city in Brazil as part of study.
The study will follow participants for up to one year to find out how long vaccine protection lasts against Covid-19 and new variants.nytimes.com
3:40 PM · Oct 10, 2021