President Trump has made a series of questionable statements about the threat from coronavirus.Credit...T.J. Kirkpatrick for The New York Times

Trump has suggested that it might be alright for people with the virus to go to work, while the Centers for Disease Control and other public health agencies have cautioned people who believe they are infected to stay at home. While Trump downplays the virus and blames President Obama, the experts say the coronavirus seems more deadly than most strains of the flu, and while there are widely available treatments and vaccines for the flu, none are ready yet and it could take a year or long for a coronavirus vaccine.