Pfizer

New coronavirus strain divides scientists as UK and others act to reduce the spread

The Covid-19 variant could make herd immunity more difficult, says BioNTech

Pfizer, Moderna is testing COVID-19 vaccines against the new strain

U.S. Army scientists analyzing new strain of COVID-19

Trump allies are exerting political pressure on the CDC staff

COVID-19 vaccines: differences, similarities and myths | News from El Salvador

How a risky bet on experimental biotechnology led to a COVID-19 vaccine – 60 minutes

CDC panel recommends older Americans and front-line workers be next in line for COVID-19 vaccine

The Tsar testing the White House says Trump should get the vaccine to boost public confidence

Vaccines do not mean we will see the last one in Covid, experts warn