Epidemiology

Testing bottlenecks and vaccine rollout problems have let the monkeypox virus spread unchecked, echoing the mistakes of the U.S. COVID response

A technique that detects coronavirus strains circulating in a community could become an early-warning system

An infectious disease expert answers questions about how the virus spreads, what its symptoms are and how to get testing and treatment

Scientists in Thailand have established that a tabby passed SARS-CoV-2 to a veterinary surgeon—although such cases of cat-to-human transmission are probably rare

The model, which uses machine learning to track the fitness of different viral strains, accurately predicted the rise of Omicron’s BA.2 subvariant and the Alpha variant

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