Health & Environment
H1N1 Influenza Remains a Persistent Public Health Concern in India
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THE BRIEF
1
H1N1 continues to circulate alongside H3N2 and influenza B in India, necessitating ongoing surveillance as the virus evolves and climate change alters transmission patterns.
2
The World Health Organization updated its H1N1 vaccine strain recommendation to A/Missouri/11/2025 for the 2026 Southern Hemisphere season and the 2026-2027 Northern Hemisphere season.
3
A 2026 study in PNAS Nexus projects that climate-driven changes in temperature and humidity could increase the intensity of influenza outbreaks in tropical regions like India.