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 ...

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

An expert group from the World Health Organization failed to find a definitive answer to the COVID-19 pandemic’s origins in ...

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

Scientists in China's Yunnan province have discovered 20 new viruses in bats, including two closely related to the deadly ...

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

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

Twenty new viruses have been discovered within bats in China, "raising urgent concerns" that these diseases might spill over ...

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

Medical experts have sounded the alarm after 20 new bat viruses were identified in China, urging Australians to remain ...