coronavirus variants

Merck says it has asked the Food and Drug Administration to authorize emergency use of its experimental anti-viral pill to treat COVID-19 in adults

New York state has long tracked COVID-19 variants like delta and breakthrough infections among fully vaccinated people, but for the first time, that information is now easily available to the public, Gov. Kathy Hochul announced Thursday. As of the latest update, which reviews the period Aug. 29 through Sept. 11, the highly contagious delta variant accounts for 99.4% of all…

A vaccine mandate for New York City’s public school teachers and other staffers can go forward as planned next week, after a state judge lifted a temporary restraining order. NBC New York’s Ida Siegal reports.

Dr. Anthony Fauci said on Tuesday that data is being studied to see if there will be recommendations for COVID booster shots in the future.

A new report from Belgium researchers highlights a coronavirus case where a woman was infected with two variants simultaneously. Experts say this is one of the first documented cases of finding two variants in the same person at the same time.

The latest CDC data shows that the Delta variant is now the dominant coronavirus strain in the U.S.

The World Health Organization has decided to assign different Greek alphabet letters like Alpha, Beta and Gamma to each new coronavirus mutation in an effort to decrease stigma.

Vaccine breakthrough cases — those that defy expected outcomes for inoculated people — represent just a fraction of fully vaccinated people, but the CDC and NYC health officials are working to better understand them.

The Johnson & Johnson vaccine pause gives medical authorities time to investigate the rare cases of blood clots and determine the cause. Dr. Jennifer Haythe, co-director of Columbia Women’s Heart Center, explains that this type of blood clot requires a different treatment than a typical clot, and symptoms to look out for.

Officials said that clarity regarding how long the Johnson & Johnson shot will last should come within the next few days — but until then, some of the city’s most vulnerable homebound residents won’t be able to get a vaccine. NBC New York’s Andrew Siff reports.

As more Americans get fully vaccinated against the coronavirus, the number of breakthrough infections is expected to rise, too. Here’s what you need to know about this medical phenomenon.

Even when there were just a few dozen confirmed cases of COVID-19 in the U.K., professor Sharon Peacock recognized that the country needed to expand its capacity to analyze the genetic makeup of the virus