Health
Flu Vaccine Effectiveness Averaged 39% Across 18 Seasons
The study found 9 of 18 seasons below 40% effectiveness, but it does not estimate how well the 2026–27 vaccine is working.
shahzad · · 6 min read
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The study found 9 of 18 seasons below 40% effectiveness, but it does not estimate how well the 2026–27 vaccine is working.
shahzad · · 6 min read