The Coronavirusoutbreak that started in China has spread concerns across the world. With more than 8,000 confirmed cases and at least 170 deaths, thevirusis aglobal public health emergency, the World Health Organization declared Thursday. But the vast majority of the cases and all of the deaths are in China. Despite repeated statements from the CDC declaring the general risk to the American public to be low, fear in the U.S. has spread across social media. After news that a plane carrying roughly 200 Americans out of China would land in the U.S., some questioned whether they should be let back into the country, regardless of repeated screenings from health officials. "There's a lot of hysteria right now about that," says Brandon Brown, an epidemiologist at the University of California, Riverside, school of medicine. Their concerns are better focused elsewhere, he says. More than 8,000 people in the U.S. have died from the flu this season, which peaks between December and February, according to CDCestimates. During the 2018-2019 season, the CDC estimates 16.5 million people went to a health care provider for the flu and more than 34,000 people died in the U.S. The prior season saw 61,000 deaths. Brown says, "We need to be much more afraid of the thing that's been killing us for years, which is the seasonal influenza." Good health practices can prevent both the flu and the coronavirus.