Flu season is winding down in Australia and it’s been the worst one in years. Public health officials fear it will be equally severe when it reaches the United states.
“We watch all of the Southern Hemisphere countries very closely, hoping that we get some sort of insight, but it’s not perfect by any means,” Dr. Alicia Fry, chief of the Epidemiology and Prevention Branch of the U.S. Centers for Disease Control and Prevention, told NBC News.