A 4th dose of Covid-19 vaccine will be needed, Pfizer’s CEO says, but the company is working on a shot to handle all variants
https://www.siliconvalley.com/2022/03/14/a-4th-dose-of-covid-19-vaccine-will-be-needed-pfizers-ceo-says-but-the-company-is-working-on-a-shot-to-handle-all-variants/
By Jen Christensen and Holly Yan | CNN
To help fend off another wave of Covid-19, people will need a fourth dose of vaccine, Pfizer CEO Albert Bourla told CBS on Sunday.