Chikungunya virus continues to circulate in French Guiana, with 143 cases reported since January 2026, with 33 cases in week 16 2026, compared with 15 cases the previous week (all cases confirmed by RT-PCR). Most cases (80%) are reported in the western coastal area, which was declared in epidemic phase (highest level) on 23 April 2026.

The Maroni, Savanes, and Ile de Cayenne sectors are in a phase of sporadic transmission, whereas the Intérieur, Intérieur Est, and Oyapock sectors remain in a surveillance phase, with no cases identified to date.