While health officials in the United States wait to see just how bad a public health challenge COVID-19 will pose, they still have to deal with an all-too-familiar challenge: flu.
It's been a bad flu season. Not the worst ever, but bad.
"It started very early this year," says Emily Martin, associate professor of epidemiology at the University of Michigan School of Public Health. She works with the Centers for Disease Control and Prevention collecting statistics about flu.