Tweaked COVID vaccines in testing aim to fend off variants
Dozens of Americans are rolling up their sleeves for a third dose of COVID-19 vaccine—this time, shots tweaked to guard against a worrisome mutated version of the virus.
by ·
Dozens of Americans are rolling up their sleeves for a third dose of COVID-19 vaccine—this time, shots tweaked to guard against a worrisome mutated version of the virus.
by · Published April 21, 2021
by · Published June 11, 2021
by Linda Brown · Published June 22, 2022 · Last modified December 2, 2024