22%–34% effective against outpatient visits and 30% against hospitalizations.
The primary reason for lower effectiveness this season is a with the dominant H3N2 "subclade K" strain. This mutated version emerged after the 2025–26 vaccine composition was already finalized. Other factors include: CDC Seasonal Flu Vaccine Effectiveness Studies
30%–42% effective depending on age and setting. Influenza B: 45%–71% effective. Why Effectiveness Varies
38%–41% effective against outpatient visits and 41% against hospitalizations.
30%–41% effective against outpatient visits and about 30% against hospitalizations. By Flu Strain:
AGROTRAC PRIM” S.R.L является официальным дилером сельскохозяйственной техники ARMATRAC в Молдове! Компания ”AGROTRAC PRIM” S.R.L. предоставляет широкий ассортимент тракторов от 58 Л.С до 125 Л.С комплектации Lux! Ассортимент поставляемой нами продукции постоянно растет и сейчас включает в себя более ста видов различных продуктов! How Effective is the Flu Vaccine?