A new COVID-19 variant spreading across the United States may cause an extremely painful sore throat—dubbed the "razor throat"—among its symptoms. The new "Nimbus" strain, also known as COVID-19 NB 1.

A new COVID-19 strain has been reported in dozens of countries, including the U.S. Here's what you should know about it.

COVID appears to be on the rise as a new, highly contagious subvariant — featuring “razor blade throat” symptoms overseas — is becoming increasingly dominant.

The NB.1.8.1 COVID-19 variant was linked to a large surge of hospitalizations in parts of Asia earlier this year.

World-renowned infectious-disease epidemiologist Martin Kulldorff — who was fired from Harvard Medical School last year after refusing the COVID vaccine — just got a new gig. Kulldorff has been named a member of the Centers for Disease Control and Prevention’s Advisory Committee for Immunization Practices.

Aging weakens your immune system, making you more vulnerable to preventable diseases. The CDC recommends five critical vaccines for adults over 50 that could save your life.

NEW YORK (AP) — All 17 experts recently dismissed from a government vaccine advisory panel published an essay Monday decrying “destabilizing decisions” made by U.S. Health Secretary Robert F. Kennedy Jr. that could lead to more preventable disease spread.

While COVID-19 transmission remains low in the US, health experts are anxious about the potential for a big summer wave as two factors seem set for a collision course: a lull in infection activity that suggests protective responses have likely waned in the population, and a new SARS-CoV-2 variant with an infectious advantage over other variants.