People Who Got a Flu Vaccine 27 Percent More Likely To Get the Virus, Study Finds

‘No protective effect emerged at any point,’ the researchers say.

AP/Mary Conlon
A flu vaccine is displayed at a pharmacy in New York. AP/Mary Conlon

A new large-scale study conducted by the Cleveland Clinic on the effectiveness of the 2024–2025 influenza vaccine shows that those who took the shot had a 27 percent higher risk of infection compared to those who skipped the jab.

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