A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to ...

When the first reports of a new COVID-19 variant emerge, scientists worldwide scramble to answer a critical question: Will ...

Since the emergence of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), understanding the mechanisms underlying ...

Just as the world began to feel a sense of stability after years of pandemic turbulence, the virus continued to evolve, producing new variants over time. Alarmingly, scientists have recently ...

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

It likely jumped from animals to humans, the experts said in their final report Friday. However, a critical component of the investigation was missing: Despite repeated requests, the group was not ...