Fact checked by Nick Blackmer A new Cleveland Clinic study—yet to be peer-reviewed—found higher flu rates in vaccinated ...

The study’s results indicated the cumulative incidence of influenza – or the number of new cases divided by the total number ...

Is the flu vaccine less effective than hoped? Preliminary Cleveland Clinic research reveals a surprising result among vaccinated healthcare workers, but doctors caution about limitations.

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 ...