Americans will be able to order up to four COVID-19 nasal swab tests delivered to their home free of charge starting later ...

One major reason why it has been difficult to develop an effective HIV vaccine is that the virus mutates very rapidly, ...

This year's spike in cases marks a return to pre-pandemic levels of this infection, which is also called pertussis.

Pfizer's and Moderna's formulas have been the go-to on pharmacy shelves, but Novavax remains an important option.

FluMist is a nasal spray manufactured by AstraZeneca that has been used to protect against influenza in the United States since 2003.