A new Covid-19 variant called NB.1.8.1, or Nimbus, represents about a third of new US Covid-19 cases. Dr. Leana Wen answers common questions about the new variant.

New WHO report suggests COVID-19 originated from animal-to-human transmission, though Director-General Tedros maintains all ...

WHO director Dr Tedros Adhanom Ghebreyesus says all hypotheses are on the table, as the organisation works to reinforce ...

China accused the U.S. of politicising the matter of the origins of COVID-19. It cited a Missouri lawsuit which resulted in a $24 billion ruling against China for hoarding protective medical ...

An expert group charged by the World Health Organization to investigate the origins of the COVID-19 pandemic has found no ...

A contagious new COVID-19 variant called NB.1.8.1, aka "Nimbus," is now dominant in the United States, CDC data show. What to know about symptoms and vaccines.

WHO’s Tedros says ‘all hypotheses must remain on the table’ after critical information not provided to investigators.

"Until further requests for information are met, or more scientific data becomes available, the origins of SARS-CoV-2 and how ...

The World Health Organization’s expert group says the origin of COVID-19 remains inconclusive, though most evidence still ...

In a research published in the PLOS Journal, the scientists in China have revealed about some never-before-seen viruses in the bats that live close to humans. These viruses are quite closely related ...

New viruses that are genetically similar to known fatal viruses have been discovered near food sources in a concerning new ...

Sharp throat pain that feels like swallowing razor blades—this symptom is particularly noticeable in infections with the new ...