#TeamPfizer and #TeamModerna are two of the captions often found next to selfies of proud newly vaccinated people on social media. And both groups do have a reason to celebrate as the two mRNA ...

Scroll through the chart below to see ... at preventing COVID-19. Pfizer's and Moderna's vaccines are each more than 90% effective. But it's difficult to compare the companies' trials side by ...

Moderna and Pfizer are in talks with the federal government over a potential avian flu vaccine program, the head of the U.S. government’s pandemic response administration said late Wednesday.

Pfizer and partner BioNTech have launched a countersuit against Moderna in a patent dispute centring on their mRNA-based vaccines for COVID-19. Moderna fired the first volley back in August ...

One, developed by Pfizer/ BioNTech, has been authorized for people aged 12 years old and up, while the other, developed by Moderna, has been OK’d for people aged 18 or older. The Food and Drug ...

Moderna said Friday that the European Patent Office has upheld the validity of one of its key patents, a victory in a continuing dispute with Pfizer and BioNTech over rival COVID-19 vaccines.