As a new COVID-19 variant takes over in the U.S., guidance surrounding vaccines has become increasingly confusing. Changes in ...

An expert group charged by the World Health Organization to investigate how the COVID-19 pandemic started released its final ...

A new COVID-19 variant named "Nimbus" has been detected in the U.S. and is spreading rapidly. Here's what to know about ...

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 ...

The FDA has updated labels on the top two COVID-19 vaccines to warn of a rare heart side effect, mostly seen in young men.

Alberta's decision to reduce access to publicly funded COVID-19 vaccines so far appears to set the province on a different course than many other Canadian jurisdictions. Most Albertans will no longer ...

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

The World Health Organization said on Friday that efforts to determine the origins of SARS-CoV-2, the virus that caused the ...

The update follows an inconclusive four-year investigation, hindered by the withholding of crucial information. Kenyans would fork out the billions to pay for undelivered and ‘unneeded’ doses of Covid ...

A video falsely portraying Professor Salim Abdool Karim criticising Covid-19 vaccines has been denounced as disinformation. The Centre for the AIDS Programme of Research in South Africa and the ...