While most people will clear the virus and get a negative antigen test result within 10 days, some people may keep testing positive for longer than that, experts tell TODAY.com. And if you keep ...

The company also offers platform-agnostic next-generation sequencing tests and a suite of sample prep and thermal cycling instruments.

One-step reverse-transcription quantitative polymerase chain reaction (qRT-PCR) is the most widely applied method for COVID-19 diagnostics. Notwithstanding the facts that one-step qRT-PCR is well ...

Wondering about the latest vaccine recommendations to protect against COVID-19? It's complicated.

U.S. health officials have expanded warnings about a rare heart side effect associated with the two leading COVID-19 vaccines.

A new COVID-19 variant, called NB.1.8.1, is emerging in the United States as summer approaches. First detected at the end of April, the Omicron offshoot has now surpassed other variants in prevalence, ...

A new COVID-19 variant that was unheard of just months ago is now projected to be the second-most common strain in the United States. Variant NB.1.8.1 was first detected in China in January but ...

New COVID variant is spreading quickly in the US: Here are the symptoms, what to know? Mary Walrath-Holdridge Greta Cross Julia Gomez USA TODAY 0:05 ...