Viruses

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

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

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

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

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

Veterinarians and rabbit owners are racing to protect bunnies as a hemorrhagic disease spreads

The reports’ authors say that the novel coronavirus, or SARS-CoV-2, jumped from animals sold at the market to people twice in late 2019—but some scientists want more definitive evidence

It’s too soon to know if the variant causes milder COVID, but its transmissibility and ability to evade vaccines are still cause for concern

The rapid spread of new variants such as Omicron offers clues to how SARS-CoV-2 is adapting and how the pandemic will play out over the next several months

The rapid spread of new variants such as Omicron offers clues to how SARS-CoV-2 is adapting and how the pandemic will play out over the next several months

The numerous changes in the coronavirus’s spike protein could have arisen in an isolated population or an immunocompromised person—or animals