“The effectiveness of the COVID vaccines can vary depending on which variants are targeted in the vaccine, which variants are circulating, and host factors,” said Shirin A. Mazumder, MD, and ...

The updated mRNA-1273.815 COVID-19 vaccine was significantly protective against hospitalization and medically attended outcomes among adults in the United States.

Under normal circumstances, the study of health problems after COVID vaccinations posted online on Feb. 25 might not have ...

Nigeria is missing from the list of countries on track to secure the World Health Organisation (WHO) vaccine approval due to ...

The federal government has cancelled a deal with vaccine maker Novavax to manufacture COVID-19 vaccine in Montreal, the company said in a filing with the U.S. securities regulator.