Chikungunya virus disease worldwide overview

Since the beginning of 2025, and as of July, approximately 240 000 CHIKVD cases and 90 CHIKVD-related deaths have been reported in 16 countries/territories. Cases have been reported in the Americas, Africa, Asia, and Europe. 

In EU (excluding the outermost regions), there have been 31 autochthonous cases of CHIKVD reported in 2025 from France (30) and Italy (1). In addition, over 54 000 CHIKVD cases have been reported from the French outermost region of Réunion as of 18 July 2025. Cases have been reported in all of the island's municipalities. The Level of the ORSEC 'Arboviruses' system has been downgraded to 2, which corresponds to the circulation of a moderate-intensity epidemic. In Mayotte, 1 098 autochthonous cases of CHIKVD have also been reported. Mayotte continues to be in the epidemic phase (phase 3 since 27 May 2025), which indicates intense and widespread transmission of the virus throughout the territory. 

In 2025 to date, the Americas account for the highest number of CHIKVD cases reported worldwide. As of mid-July 2025 (data collected on 14-15 July 2025), the countries reporting the highest number of CHIKVD cases are Brazil (185 553), Bolivia (4 721), Argentina (2 836), and Peru (55). A complete list of the countries of the Americas reporting CHIKVD cases can be found on PAHO's dedicated website. 

As of beginning of July 2025, over 34 000 CHIKVD cases were reported in Asia from India, Sri Lanka, Mauritius, Pakistan, and China. In Africa, CHIKVD cases in 2025 have been reported by Senegal and Kenya. EU/EEA countries have reported imported cases from other African countries, e.g. Madagascar and the Seychelles, possibly indicating more widespread circulation of chikungunya in the Indian Ocean region (Arbovirosi • bollettini periodici arbovirosi, Arboviruses Report 16 July 2025 Sante Publique France).