The H5N1 avian flu is circulating in cows and other mammals. Whether it will make a permanent leap to humans is another ...

Bird flu was nearly everywhere in the U.S.—in chickens, cows, pet cats and even humans. Cases have gone down, but experts ...

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 ...

Diphtheria is a highly contagious infection that suffocates its victims by forming a thick grey coat over the throat and tonsils, and vacationers in European destinations have been warned to remain vi ...

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

Infectious disease expert and CEO of Wellness and Equity Alliance, Dr. Tyler B Evans, previously told Newsweek that there was "no clear evidence that this subvariant presents dramatically different ...

With overlapping symptoms like fever, sore throat, runny nose, cough, fatigue, headaches and body ache, it can be hard to differentiate between Covid-19 and flu.