WASHINGTON - President Donald Trump further disparaged his senior health advisers on Monday even as the pandemic deepened its hold on the nation, as the White House's top coronavirus coordinator, Deborah Birx, joined Anthony Fauci and other scientists on the receiving end of the president's ire. 

Deborah Birx, the physician overseeing the White House coronavirus response, warned Sunday that the United States had entered a "new phase" of the pandemic and urged people to take extreme health precautions as infections and deaths rise sharply throughout the country.