"It's the biggest experiment that's ever happened." In a stunningly short period of time, the delta variant has changed the course of the COVID-19 pandemic by evolving to become more transmissible ...

SAN FRANCISCO (KGO) -- On Dec. 31, UCSF'S Dr. Charles Chiu and his colleagues were in a lab when they found what they are calling"L-452R," a California variant of COVID-19. "We actually discovered ...

The delta variant is fueling the COVID-19 surge in the United States, but experts warn that a more dangerous variant could emerge if more Americans don't get vaccinated. Delta is the most recent of ...

Since SARS-CoV-2 first emerged in late 2019 the virus has spawned dozens of lineages, a handful of global "variants of ...

The XFG COVID-19 variant, aka "Stratus," is spreading rapidly in the U.S. as cases climb. Here's what to know about symptoms ...

“We observed the rise and fall of different combinations of mutations at different times of infection, supporting the idea that in long-term SARS-CoV-2 infections, the dominant genome can change over ...

RALEIGH, N.C. (WTVD) -- A laboratory in Raleigh is at the forefront in detecting changes to the COVID-19 virus in the United States. Mako Medical is located off Durant Road near US 1, and it processes ...

DURHAM, N.C. (WTVD) -- COVID-19 remains a threat to public health, and the people on the frontlines of prevention have advice for everyone who's worried. ABC11 heard from experts associated with Duke ...

While most people recover at home, anyone who is very unwell or has trouble breathing should seek urgent medical help. Not ...

A variant strain of the coronavirus, one that was first discovered in the United Kingdom, is now the dominant strain of the virus circulating throughout the United States, CDC Director Rochelle ...

US health secretary Robert F. Kennedy Jr. has announced he is canceling US $500 million (£374 million) of research into mRNA vaccines, citing unproven concerns about their safety and long-term effects ...