The Pfizer-BioNTech vaccine protects against symptomatic Covid-19 for at least six months, according to new findings released by the companies

The Pfizer-BioNTech vaccine protects against symptomatic Covid-19 for at least six months, according to new findings released by the companies https://t.co/OQT41JD4aF

— The Wall Street Journal (@WSJ) April 1, 2021