Anthony S. Fauci, the nation’s top infectious-disease specialist, pushed back at a portrayal of himself as highly critical in private of President Trump’s leadership during the coronavirus pandemic, questioning quotes attributed to him in a new book by Washington Post associate editor Bob Woodward. The book also includes an admission by Trump on March 19 that he deliberately minimized the danger of the virus. “I wanted to always play it down,” the president said.

Here are some significant developments: