The advice is another setback for the drug, which grabbed worldwide attention as a potentially effective treatment for COVID-19 in the summer after early trials showed some promise.

New research shows antibodies in recovered COVID-19 patients lasting up to eight months after infection, which bodes well for future vaccines, experts say.

Dr. Qingping Feng began his sepsis research in London, Ont., in 1997.

Discovery of a new strain of the virus on Denmark’s mink farms infecting 12 people prompts drastic measures, as experts urge caution and call for more research.  

The WHO director-general has been at the forefront of the global response to the coronavirus pandemic.

A yet-to-be-published study says it's okay to wear a mask, but social distance and hand washing are still the most effective ways to prevent spread of COVID-19.

Dr. Michael Ryan of the WHO, said the figures mean ``the vast majority of the world remains at risk" of coronavirus.

Efforts to elevate national interests over collective global health result in slower progress and limited global capacity to pool resources, these medical experts say.

WHO Director-General Tedros Adhanom Ghebreyesus hailed the program as "good news'' in the fight against COVID-19.

Hundreds of thousands essential workers and other limited groups of people considered at high risk of infection have been given the vaccine.