Since the COVID-19 pandemic began, health officials have warned that the biggest barrier to controlling the virus would be its ability to mutate into ever more infectious and dangerous forms. The ...

Far from concluding, the Covid pandemic seems to be picking up speed with new variants. The BA.5 variant is spreading rapidly in Europe and North America, potentially infecting as many or more people ...

The BA.2.75 sublineage of the B.1.1.529 (omicron) variant of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) may escape neutralizing antibodies. The BA.2.75 sublineage (primarily the BA.2 ...

As the United States enters the thick of respiratory virus season, a highly mutated COVID-19 variant called BA.2.86 is spreading and causing an increasing proportion of cases across the country.

Nearly 1 in 10 new COVID-19 cases in the U.S. are from the BA.2.86 variant, the Centers for Disease Control and Prevention estimated Monday, nearly triple what the agency estimated the highly mutated ...

The subvariant of Omicron is becoming more common in the United States but probably won’t cause another large spike. By Carl Zimmer As the Omicron coronavirus surge subsides, researchers are keeping ...