Epidemiology

Shi Zhengli, the virologist at the center of COVID lab-leak theory, reveals coronavirus sequences from the Wuhan institute

A new study finds tweaking part of the H5N1 virus infecting dairy cows in a single spot could allow it to better attach to human cell receptors, raising concerns it could transmit more easily between people

Milder cases of pneumonia, dubbed “walking pneumonia,” are on the rise in young children this year

We need targeted public health interventions to reduce transmission from asymptomatically infected individuals. Like COVID, silently spreading pathogens can lead to far more infections and fatalities

Canada’s first human case of bird flu has left a teenager in critical condition as human infections continue to emerge in the western U.S.

Wastewater in several Californian cities, including San Francisco and Los Angeles, recently tested positive for bird flu. But understanding disease risk and exposure to humans isn’t so straightforward

“Going viral” appears to be more than just a catchphrase when it comes to the rampant spread of misinformation

Analysis of a strain of the virus circulating in Central Africa shows genetic mutations indicative of sustained human-to-human spread

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