A second wave of seasonal influenza is taking hold in the U.S. and elsewhere, just as health officials are on high alert for new cases of the novel coronavirus. Many of the symptoms are the same, but when it comes to immediate risk, people should fear the flu more.

The Centers for Disease Control and Prevention estimates that more than 19 million Americans have fallen ill with the flu so far this season, including 180,000 who ended up in the hospital. About 10,000 Americans have died, including more than 60 children.

The flu season has taken a backseat to the coronavirus emanating from Wuhan, China. That pathogen has already infected more than 11,700 people in more than two dozen countries, the vast majority in China.