Today, PLOS Medicine published two large COVID-19 studies, one a meta-analysis of 79 international studies showing that most infected patients eventually have symptoms, and the other a study of 5.8 million US Department of Veterans Affairs patients revealing that blacks and Hispanics were more likely to be infected—but not to die within 30 days—than whites.Small proportion of asymptomatic patientsThe first study, by researchers at the University of Bern in Switzerland, consisted of a systematic review and meta-analysis of COVID-19 literature from March to June and an analysis of 79 studies involving 6,616 people in 19 countries or territories, of whom 1,287 were classified as asymptomatic.The investigators found that only 20% of coronavirus