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.

The newest concerning variant of covid-19 is rapidly advancing across the U.S. Data from the Centers for Disease Control and Prevention shows that NB.1.8.1 has started to supplant other circulating strains of the coronavirus.

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.

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.

NB.1.8.1 — a new COVID-19 variant tied to a surge in China — now accounts for around 37% of cases in the U.S., according to variant proportion estimates from the CDC. Four notes: