Michael Grothaus / Fast Company
The CDC flu map shows a dramatic spread of red and purple right now – Its shaping up to be one of the worst flu seasons in years. So far, 8.7 million Americans have fallen ill from influenza, and 4,500 have died. Last month, health-tech company Kinsa warned that the 2022-23 flu season could be the worst in six years, and now new data appears …