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 ...

Researchers discovered 20 new viruses and two henipaviruses closely related to deadly Nipah and Hendra strains in Yunnan bats ...

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

SCIENTISTS have raised “urgent concerns” over new viruses discovered in bats which have the potential to spill over into ...