Health authorities have confirmed the presence of a new COVID-19 variant in the United States, marking the latest development in the ongoing evolution of the coronavirus pandemic. The strain, ...

It's been less than a month since health officials reported the first known case of a new and more contagious coronavirus variant in Texas. The man, a Harris County resident, had no travel history.

SAN FRANCISCO -- The Delta variant now accounts for more than 51% of new COVID-19 cases across the country. Los Angeles County public health officials recommend everyone wear masks inside regardless ...

In early November 2023, the JN.1 variant caused less than 5% of COVID-19 cases in the U.S. Now it is estimated to cause more than 60% of them. Virologists including Andy Pekosz, a professor in the ...

As a prominent epidemiologist, member of President Joe Biden’s COVID-19 Advisory Board and a frequent expert commentator on the pandemic, Michael Osterholm, PhD, is skilled at transforming complex ...

VIENNA (AP) - The omicron variant of the coronavirus has been detected in 89 countries, and COVID-19 cases involving the variant are doubling every 1.5 to 3 days in places with community transmission ...

This week, the nation’s two largest teachers’ unions dropped their opposition to COVID vaccine mandates for their members. The National Education Association and the American Federation of Teachers ...

A new subvariant of Omicron is spreading rapidly in some parts of the world. This spinoff from the original Omicron variant, called BA.2, has been found in at least 49 countries, including the United ...

The proportion was estimated at approximately 3% in late May. A highly contagious variant of the novel coronavirus that was initially identified in India now accounts for about 58% of all COVID-19 ...