Pfizer vaccine shows 100 per cent efficacy in 12-15 year olds: US study

Pfizer vaccine shows 100 per cent efficacy in 12-15 year olds: US study For the study, 2,260 adolescents participated aged between 12 to 15 years, of which 1,131 were given the vaccine (BNT162b2) and 1,129 were given a placebo. https://ift.tt/eA8V8J