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 ...

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

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

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

The SARS-CoV-2 virus that causes COVID-19 must bind to ACE2 to enter cells and infect them. A mutation that alters its structure and expression might block the virus from binding and prevent ...

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 ...

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 ...