Почитайте! Источников-множество. Пару привожу только.От легкой до средней тяжести (легкая пневмония)- 81 процент. 14 процентов-тяжелое течение болезни (поражено более 50 процентов легких, требуется госпитализация и кислород)5 процентов - критическое состояниеHow Many People With COVID-19 Will Get Pneumonia?About 15% of COVID-19 cases are severe. That means they may need to be treated with oxygen in a hospital. About 5% of people have critical infections and need a ventilator.https://www.webmd.com/lung/covid-and-pneumonia#1Mild to moderate (mild symptoms up to mild pneumonia): 81%Severe (dyspnea, hypoxia, or >50% lung involvement on imaging): 14%Critical (respiratory failure, shock, or multiorgan system dysfunction): 5%https://www.cdc.gov/coronavirus/2019-ncov/hcp/clinical-guidance-management-patients.html