The US Food and Drug Administration has discussed with vaccine-maker Novavax the need for an additional trial of its Covid-19 ...

Federal regulators have asked Novavax to complete an additional clinical trial on its COVID-19 vaccine after previously ...

A rare cell type in the lungs is essential to survival from the COVID-19 virus, a new study shows.

A new randomized study could cost Novavax tens of millions of dollars, vaccine experts say ...

Editorial: If the human immunodeficiency virus is less well suppressed thanks to President Trump’s cuts to USAID, it risks ...