12-month Chikungunya virus disease case notification rate per 100 000 population, October 2024-September 2025

Since the previous update on 22 August 2025 and as of 27 September 2025, there have been 21 266 chikungunya virus disease (CHIKVD) cases, including 10 associated deaths reported worldwide from seven countries, of which two are EU/EEA countries. Cases have increased by 29.3% compared to the previous month, when 16 451 were reported. Deaths have also increased when compared to the previous month, when four deaths were reported.