Key Points

• Activity volume of the various facilities: The total activity volume of the various participating medical facilities is generally decreasing compared to the previous week.

• Gastrointestinal syndromes: indicators were generally stable or decreasing but remained, for some, at high levels.

• Typhoid: 57 cases of typhoid have been reported since January 1, 2025, mainly between 2025-S05 and 2025-S09. A single case was reported in 2025-S10 in a village in the municipality of Mamoudzou.

• Respiratory syndromes: indicators were increasing in hospitals (emergency departments, laboratories) and stable in other data sources. Mayotte has been in an epidemic phase for influenza since 2025-S05 (late January) (following a pre-epidemic phase in 2025-S01) and for bronchiolitis since 2024-S49 (early December).

• Skin conditions: indicators were on the rise, except in emergency departments where they were stable.

• Arboviruses: A first case of chikungunya imported from Réunion, where an epidemic is underway, was detected in Mayotte in week 2025-10. To date, no indigenous cases have been reported in Mayotte.

• Leptospirosis: 23 cases have been reported since January 1, 2025, including 12 in 2025-S10; data from the coming weeks will need to be monitored to confirm whether this increase is sustained.

• Access to water: Difficulties accessing water have again been reported and observed in households visited during community-based surveillance outreach visits.