Flu News

February 20, 2020

Mid-Season Flu Vaccine Efficacy

More than halfway through the 2019-2020 flu season, and the CDC estimates of vaccine efficacy are in: this year’s vaccine has been 45% effective in protecting people and keeping them out of the clinic and hospital.

In years past, effectiveness has ranged from 40%-60%.  For children this season, researchers estimate that the vaccine offered 55% protection.

Read more: https://www.cdc.gov/mmwr/volumes/69/wr/mm6907a1.htm