First year of ongoing invasive Haemophilus influenzae type b outbreak among middle-aged people who use drugs and people who experience homelessness in Hamburg, Germany, September 2024 to August 2025. (eurosurveillance.org)

Authors: Buhler S … Lam TT Journal: Eurosurveillance Published: 2026-09-01 DOI: https://doi.org/10.2807/1560-7917.ES.2026.31.35.2600134