Communicable disease threats report, 17-23 May 2025, week 21

This week’s topics Week 21, 17−23 May 2025 1. Mpox in the EU/EEA, Western Balkan countries and Türkiye – 2022–2025 2. Mpox due to monkeypox virus clade I and II – Global outbreak – 2024–2025 3. Autochthonous chikungunya virus disease – Réunion and Mayotte, France, 2024–2025 4. Overview of respiratory virus epidemiology in the EU/EEA Executive summary Mpox in the EU/EEA, Western Balkan countries and Türkiye – 2022–2025 • Since the last update on 14 April 2025, and as of 19 May 2025, 117 mpox cases have been reported from 14 EU/EEA countries: Germany (33), Netherlands (21), Spain (14), France (13), Sweden (8), Ireland (7), Italy (6), Portugal (4), Belgium (3), Czechia (2), Greece (2), Norway (2), Austria (1) and Croatia (1). Since 14 April 2025, no new countries have reported confirmed cases. • Since the start of the mpox outbreak and as of 19 May 2025, 24 548 confirmed cases of mpox (MPX) have been reported from 29 EU/EEA countries • Twenty-one MPXV clade I cases have been reported in the EU/EEA since August 2024, from Sweden, Germany, Belgium, Ireland, and France. All were clade Ib except for the case in Ireland, which was clade Ia. • The overall risk remains low for men who have sex with men and low for the broader EU/EEA population. However, as summer travel and Pride season starts, transmission could increase and it is important to raise awareness among men who have sex with men in the context of general messaging on sexually transmitted infections. Mpox due...