The flu vaccine offered no protection against the H3N2 strain that dominated at the end of the 2018-19 US flu season, federal officials said last week, leaving overall protection from the disease at only 29%.

The numbers do not reflect final end-of-season data that will be made public in the coming weeks, but they result from Centers for Disease Control and Prevention (CDC) analysis through May, according to data presented Jun 27 to the CDC’s Advisory Committee on Immunization Practices (ACIP).

And, despite lower-than-normal effectiveness, the flu vaccine still prevented up to 90,000 hospitalizations.

Higher protection against H1N1

Credit CDC

Read more at CIDRAP…

See also:

Jun 26-27 ACIP meeting agenda

CDC seasonal flu VE data for recent seasons