Think You’ve Never Had Covid-19? Think Again

July 25, 2022

(Wall Street Journal) – Dr. Ding is a member of a shrinking club of people who are pretty sure they have never been infected with SARS-CoV-2, the virus that causes Covid-19. Geneticists and immunologists are studying factors that might protect people from infection, and learning why some are predisposed to more severe Covid-19 disease. For many, the explanation is likely that they have in fact been infected with the virus at some point without realizing it, said Susan Kline, professor of medicine at the University of Minnesota Medical School. About 40% of confirmed Covid-19 cases are asymptomatic, according to a meta-analysis published in December in the Journal of the American Medical Association. (Read More)