WHO Finalizes 2026-27 Northern Hemisphere Flu Vaccine Strains WHO flu vaccine guidance for 2026-2027 North cites new A(H3N2) variant, low influenza B, and 25 zoonotic cases since Sept 2025. 28 Apr 2026 #WHOGuidelines#FluVaccine#Influenza#PublicHealth#VaccineDevelopment
