For those who were expecting to be out and about for the Easter holiday, your plans will have to wait. President Trump previously showed a desire to reverse drastic self-isolation measures, giving false hopes to some.

But last Sunday, Mr. Trump changed his mind. He instead announced that all Americans must continue to avoid going to work, gathering in groups, dining out, and traveling till the end of April.

Dr. Anthony S. Fauci, the nation’s leading infectious disease expert, urged Mr. Trump not to cancel the measures too soon. “Dr. Birx and I spent a considerable amount of time going over all the data, why we felt this was a best choice for us, and the president accepted it,” Dr. Fauci told the New York Times.