Pfizer seeking OK for 4th covid shot
WASHINGTON -- Pfizer and its partner BioNTech asked U.S. regulators Tuesday to authorize an additional booster dose of their covid-19 vaccine for seniors, saying data from Israel s…
WASHINGTON -- Pfizer and its partner BioNTech asked U.S. regulators Tuesday to authorize an additional booster dose of their covid-19 vaccine for seniors, saying data from Israel s…