Epidemiology

Humans and pigs could both serve as mixing vessels for a bird flu–seasonal flu hybrid, posing a risk of wider spread

Pediatric long COVID is more common than many thought, and we keep letting kids be reinfected with new variants

Whooping cough, also known as pertussis, is on the rise after a lull at the beginning of the COVID pandemic

Rwanda’s health minister says authorities are tracing every potential contact of the index case in the country’s outbreak of Marburg virus disease to reduce the risk of wider spread

New research dispels the notion that human beings can continue to radically extend their lifespan

Experts call for greater testing of contacts of a person who was infected with the H5N1 bird flu strain before the virus causes a wider outbreak

Infectious disease specialists explain whether vaccines will curb the mpox outbreak that was recently declared a global health emergency

The Oropouche virus, which causes a disease nicknamed “sloth fever” for one of the animals that can be infected, has seen its first cases in the U.S.

We’re in a summer COVID surge, and updated vaccines are due soon. Here’s a quick update on what you need to know

As bird flu spreads in cats, cows and other animals, it has more opportunity to adapt to easily infect humans

A new type of mpox has infected thousands in the Democratic Republic of the Congo and other African countries, but vaccines and treatments are hard to come by

West Nile is the most common mosquito-borne disease in the U.S. Here’s what to know about the infection