Annual influenza vaccination does not prevent natural immunity

Annual influenza vaccination does not prevent natural immunity

Nov 14 2017

Earlier studies have suggested that having repeated annual influenza vaccination can prevent natural immunity to the virus, and potentially increase the susceptibility to influenza illness in the event of a pandemic, or when the vaccine does not match the virus circulating in the population.

But now, researchers at the Influenza Center in Bergen report that annual influenza vaccination does not increase susceptibility to influenza infection in years of vaccine mismatch.

"These findings are important because they show that it is only positive to have annual influenza vaccination, and it supports continuing the policy of repeated annual vaccination," says Professor Rebecca Cox, Head of the Influenza Centre.

Source: Medical Xpress