Epidemiology

The detected strain can sometimes cause severe disease in people who are not vaccinated against polio

Will governments apply lessons learned from COVID to this latest viral outbreak?

The death rate among unvaccinated people is still far higher than that among the vaccinated even though vaccinated people now make up a significant proportion of deaths

Researchers are racing to understand the latest monkeypox outbreaks—from their origins to whether they can be contained

Mass infections in wild birds pose a significant risk to vulnerable species, are hard to contain and increase the opportunity for the virus to spill over into people

Results from a large study suggest that vaccines offer less protection against lingering symptoms than expected

It is unclear how some people recently diagnosed with the disease became infected with the monkeypox virus or how it is likely to spread

Work on genetically modified pigs might provide a solution to the strange illness

A microbiologist explains what is known about this smallpox cousin

How to tell the different versions of SARS-CoV-2 apart, and how well vaccines protect against them

Firearms now exceed motor vehicle crashes as the leading cause of injury-related death for people ages one to 24, an analysis shows

A modeling study is the first to project how global warming will increase animal encounters and virus swapping between species