WASHINGTON — After months of publicly rejecting the advice of his own medical experts, President Donald Trump has fallen victim to his own false narrative around the risks of the coronavirus and how to avoid getting infected.

The news early Friday that the president and first lady Melania Trump had tested positive for Covid-19 came as a jolt — but medical experts said it shouldn't have. In recent weeks, Trump, 74, has put his health and the health of his staff at risk by holding mass gatherings, some indoors, and shunning mask use while claiming that the end of the virus was just around the corner.