Vaccination

US orders 200 mn more Pfizer-BioNTech vaccine doses

The United States will purchase 200 million more COVID-19 vaccine doses from Pfizer and BioNTech and has an option to buy additional doses to address virus variants, the companies announced Friday.

Diseases, Conditions, Syndromes

The long view on COVID-19 vaccine safety and efficacy

The mRNA vaccines for COVID-19, made by Pfizer/BioNTech and Moderna, are among the most powerful vaccines the world has ever seen. According to clinical trial data, they are more than 94% effective at preventing symptomatic ...