Diseases, Conditions, Syndromes

Chronic COVID infections source of variants of concern, study shows

The coronavirus variants of concern are emerging from chronic, long-term COVID infections in people who may be immune comprised and unable to clear the virus, a new study strongly suggests. Frontiers in Virology published ...

Diseases, Conditions, Syndromes

France, Britain impose COVID tests on travelers from China

France and Britain on Friday joined a growing list of nations imposing COVID tests on travelers from China, and the World Health Organization pressed Beijing to be more forthcoming on real-time data amid an explosion of cases ...

page 6 from 40