Reinfection with COVID-19 is relatively rare, though more common in people older than 65, a large new Danish study finds. Protection against reinfection appears to last more than six months, but the overall degree of protection does highlight the importance of the vaccination campaign. Researchers led by Prof Christian Holm Hansen, of the Statens Serum ...
COVID-19 reinfection is rare, though less so with age
By Dave Levitan
18 Mar 2021