Coronavirus Alert: U.S. Bans Most Travel From India, Cases in U.S. Fall Sharply, Herd Immunity May Be Impossible, Europe Recommends Opening to Vaccinated Visitors, Air Travel Hits New High

COVID-19, caused by a member of the coronavirus family named SARS-CoV-2, is short for coronavirus disease 2019. The Johns Hopkins Coronavirus Resource Center maintains an ongoing count of the COVID-19 cases and deaths in the United States and worldwide. As of 3:46 p.m. on May 3, 2021, the tally is: Total cases worldwide: 153,067,129 (up from 150,806,921 Friday) READ MORE