This year’s flu shots have dramatically reduced hospitalizations for seasonal influenza, early data suggest.
For kids and teens, the shots were at least 63% effective against flu hospitalizations and up to 78% in some regions. That’s according to data pulled from two networks of health care centers that the Centers for Disease Control and Prevention (CDC) monitors to assess flu shot effectiveness.
“Vaccine effectiveness” reflects how much a shot lowers the chances of a particular health outcome in the real world, and it’s calculated by comparing how often that outcome occurs in vaccinated versus unvaccinated people. So in this case, vaccinated kids had a 63% to 78% lower chance of being hospitalized for flu.








