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Published on 6 March 2025

Seasonal flu (influenza)

Flu (influenza) is an infectious disease that is common during the winter. You can reduce the risk of catching flu and of complications by getting a flu vaccine in the autumn. The flu jab is recommended for certain at-risk groups and their close contacts.

a person blowing their nose in front of a flu virus.

Federal Office of Public Health FOPH

Communicable Diseases Division
Schwarzenburgstrasse 157
Switzerland - 3003 Bern