Key Points

Chikungunya

• In week S09-2026, 74 cases of chikungunya were reported, representing a 30% increase compared to the previous week

• Fourteen of the territory’s 17 municipalities recorded at least one case in week S09. The three municipalities with no reported cases are located in the northwest of the territory

• Transmission could continue or even intensify in the coming weeks due to weather conditions favorable to the proliferation of mosquitoes that transmit the disease

Bronchiolitis

• A marked intensification of the bronchiolitis epidemic in week S09-2026, with RSV circulation reaching a level nearly twice that of the peak of the previous season

• High demand on emergency departments and occurrence of severe cases among very young, unvaccinated infants