Trump's Covid-19 diagnosis shows no American is out of virus's reach

President Donald Trump's startling Covid-19 diagnosis serves as a cruel reminder of the pervasive spread of the coronavirus and shows how tenuous of a grip the nation has on the crisis, health experts said.

With U.S. infections rising for several weeks, Trump was one of about 40,000 Americans who learned they had tested positive when he broke the news early Friday.

First lady Melania Trump also tested positive, and both were described as having mild symptoms. The president went to a military hospital for what the White House said was a precautionary visit of a few days. Some of his top advisers