With winter here, South Africa faces a rise in flu cases. This article explores the influenza virus, its symptoms, and ...

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.

Background: Accurate estimation of the case-fatality (CF) rate, or the proportion of cases that die, is central to pandemic planning. While estimates of CF rates for past influenza pandemics have ...

South Africa is grappling with a resurgence of the H5N1 bird flu, following outbreaks on poultry farms in Tswaing and Mkhondo ...