So when the open-source foundation model DeepSeek-R1 suddenly outperformed many global peers, it struck a nerve. This launch ...

In the shadows of Python Cave, Uganda, a leopard leaps from a guano mound—formed by bat excrement—and sinks its teeth into a ...

Despite years of global investigation, the WHO confirms COVID-19’s true origin remains unknown due to limited data, with zoonotic spillover the most likely theory and lab leak unproven.

All hypotheses on how the Covid-19 pandemic began remain open, the World Health Organization said, following an inconclusive four-year investigation that was hamstrung by crucial information being ...

A new study uncovers a surprising mechanism by which the SARS-CoV-2 virus, responsible for COVID-19, might cause immune-mediated tissue damage by targeting cells it has never infected.

SARS-CoV-2 continues to evolve new variants. One rises to the fore every six months or so, according to Peter Chin-Hong, a professor of medicine at the University of California, San Francisco, who ...

Thousands of samples taken from white-tailed deer in the U.S. showed that SARS-CoV-2 was transmitted from humans to deer more than 100 times, mutated, and then was potentially transmitted back to ...

This article looks at vertical transmission of HIV and SARS-CoV-2, the process in which mothers directly pass viruses on to their children.

Because a number of viruses can be transmitted through mosquito bites, people may wonder if the SARS-CoV-2 virus that causes COVID-19 can also circulate this way.

Severe acute respiratory syndrome (SARS) is a serious form of pneumonia caused by the coronavirus SARS-CoV-1. Learn about transmission and prevention.