Mayotte: recent disease outbreaks
Sources checked
Recent reports
Malaria (paludism) — Mayotte (island‑wide)
Health authorities report an unusually large number of malaria cases in 2026 compared with recent years, with 370 laboratory‑confirmed cases recorded since the start of the year (data to week 40/2026, ending 4 October); of these 370 cases, 270 were classified as imported and 79 as locally acquired, and 101 required hospitalisation including 10 admissions to intensive care. Santé publique France regional bulletin (12 Oct 2026). These figures indicate re‑established local transmission in 2026 (concentrated in parts of the south and east of the island) and therefore travellers should recognise that malaria risk exists in Mayotte this year. CDC travel notice — Malaria in Mayotte (updated June 2, 2026).
Acute gastroenteritis (rotavirus A) — ongoing outbreak, Mayotte
Mayotte remains in an epidemic phase of acute gastroenteritis linked to rotavirus A; surveillance data for week 40 (28 Sep–4 Oct 2026) showed a high proportion of positive laboratory tests (32.6% positive in week 40, with a decline to 24.8% in week 41) and an increase in emergency department visits and paediatric hospitalisations for diarrhoeal disease, particularly among children under five. Santé publique France regional bulletin (12 Oct 2026) (19 Oct 2026 bulletin). This is most relevant to infants and young children; healthcare services have reported increased paediatric workload during the outbreak period.
Influenza (early season circulation of A(H1)) — Mayotte
Surveillance shows early and increasing circulation of influenza A(H1) in 2026, with virological detections recorded from week 30 and indicators of rising respiratory illness presentations through September–October; laboratory confirmation was disrupted briefly while reagents were unavailable but clinical surveillance indicates intensifying activity. Santé publique France regional bulletin (12 Oct 2026) (19 Oct 2026 bulletin). Travelers who are elderly or very young should be aware of active influenza transmission locally while visiting.
Mpox (vaccine‑preventable orthopoxvirus illness) — small number of cases, Mayotte
Regional surveillance recorded three new mpox cases in week 39 (21–27 Sep 2026), including two imported from Madagascar and one secondary (autochthonous) transmission linked to an imported case; the regional summary gives 53 mpox cases for 2026 to date (combined imported and autochthonous). Santé publique France regional bulletin (12 Oct 2026). The numbers are small but the reports show continued importation risk from neighbouring islands and occasional local spread.
Current official entry/screening measures — none reported in latest regional bulletins
The most recent Santé publique France regional bulletins for Mayotte (12 and 19 October 2026) summarise local surveillance of malaria, rotavirus gastroenteritis, influenza and mpox but do not report active, island‑wide outbreak‑related border or mandatory traveller screening measures in force at publication. Santé publique France bulletin (12 Oct 2026) (19 Oct 2026 bulletin). (Historic or targeted screening has been used in past responses to imported threats, but no current port‑of‑entry restrictions or mandated screening for arriving travellers are described in these recent bulletins.)
This summary is a snapshot of surveillance reports and media coverage up to 27 October 2026; conditions and local public‑health measures can change quickly. Check the latest regional bulletins from Santé publique France and national travel‑health advice (for example, Santé publique France regional bulletins and the CDC/official travel pages) before departure and consult a travel medicine clinic if you have specific health concerns.