Different Flu Shots Next Season

The World Health Organization (WHO) recently published its recommended composition of influenza virus trivalent and quadrivalent vaccines for use in the 2023-2024 southern hemisphere influenza season.

The recommendation, published on February 24, 2023, is based on data generated by the WHO Global Influenza Surveillance and Response System.

This periodic replacement of viruses contained in influenza vaccines is necessary for the annual flu shot to be effective against the evolving nature of influenza viruses.

During the current flu season in the U.S., all influenza vaccines are quadrivalent composition.

The most effective way to prevent the disease is vaccination, says the WHO. Moreover, flu shots provide protection, even when circulating viruses do not exactly match the vaccine viruses. 

A recent analysis published on February 22, 2023, and MMWR issued on February 24, 2023, indicate the 2022-2023 flu shot preliminary effectiveness was about 68% protective for pediatric patients and 43% against adult hospitalization. 

Breaking flu shot news is posted at PrecisionVaccinations.