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(128,630 posts)
Thu Feb 29, 2024, 09:23 PM Feb 29

CDC finds flu shots 42% effective this season, better than some recent years [View all]

Source: CBS News

Updated on: February 29, 2024 / 2:41 PM EST

This season's influenza vaccines have been 42% effective so far, according to a new interim estimate from the Centers for Disease Control and Prevention, amounting to protection against the virus that appears as good or better than seasons going back to 2016.

First previewed Wednesday at a meeting of the CDC's Advisory Committee on Immunization Practices, details of the latest vaccine effectiveness, referred to as VE, estimates were published Thursday in the agency's Morbidity and Mortality Weekly Report.

"We're right in the range that we typically see when the vaccine is a good match with the viruses that are circulating. Good VE, and it's working consistent with past years," said Sascha Ellington, head of the CDC's influenza prevention and control team.

The exact strains selected to be targeted by flu vaccines are tweaked each year based on what health authorities project will be the best match to the circulating viruses each season. In recent years, vaccines have been designed to target four different subtypes of flu: two from the influenza A group of viruses and two from influenza B.

Read more: https://www.cbsnews.com/news/flu-shot-effectiveness-2023-2024-season/

Link to CDC MMWR Flu Vaccine update - Interim Estimates of 2023–24 Seasonal Influenza Vaccine Effectiveness — United States
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