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 ...

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

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

“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 ...

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 ...

FRESNO, Calif. (KFSN) -- As scientists study the new Omicron COVID variant, they use a Phylogenetic Tree to compare it to other variants of concern. Fresno County Public Health Microbiologist Jeff ...

Most of us have had to take a few days off work or school because of the flu or COVID-19. But imagine being sick with COVID, not for a week or two, but for ...

Once HIV infects a cell, the virus inserts its genetic information into the DNA, making the infection generally incurable.

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 ...

A rare genetic mutation appears to make people basically invulnerable to viruses – and it could potentially be harnessed as a therapy. Researchers have now shown this surprising viral protection can ...

As respiratory illness season begins, COVID cases have remained under control in the U.S. Here's what to know.