The United States has reported 1 million cases of COVID-19 nationwide, as of today April 28. That’s about one-third of all reported cases of the disease in the world. More than 1 million cases of COVID-19 have been diagnosed in the U.S., marking a grim milestone in the country with the most reported coronavirus infections in the world, according to data compiled by John Hopkins University. The U.S. has far more COVID-19 cases than any other country.