Key Points

HIV Infections and AIDS

• HIV Surveillance

  • The two laboratories in Mayotte, one public (CHM) and the other private (Biogroup), participate in the LaboVIH survey, which provides better insight into HIV testing activity

  • Completeness of the DO (at least one component, either the clinician or the biologist, or both): 82%

• HIV Testing

  • Source: LaboVIH: downward trend

    • The rate of HIV serology tests performed per 1,000 inhabitants has been slightly declining since 2021 98 HIV serology tests per 1,000 inhabitants in 2024 vs. 110 in 2023

  • Source: SNDS (therefore only covering those enrolled in the social security system)

    • Screening rate (individuals screened at least once a year per 1,000 inhabitants): 30.5 in 2024 (82 in mainland France excluding the Paris region) vs. 26.9 in 2023

    • The highest screening rate was found among women aged 25 to 49

  • Source: VIHTests

    • The number of HIV tests rose sharply in 2024 compared to 2023, particularly among those aged 25–49.

• HIV Diagnosis (DO)

  • The number of new HIV diagnoses rose slightly in 2024 (98 people), representing a rate of 306 per million inhabitants, which remained very high, second only to that of French Guiana (672 per million inhabitants)

  • Proportion of positive serology results: 5.0 per 1,000 tests conducted in 2024 vs. 3.1 per 1,000 tests in 2023

• HIV incidence

  • Upward trend since 2022

  • Approximately 150 people live in Mayotte without knowing their HIV-positive status

  • The median time between infection and diagnosis has been estimated at 2.7 years.

Sexually transmitted infections with Chlamydia trachomatis (Ct), gonococci, and syphilis

• Chlamydia trachomatis (Ct) infection

  • The screening rate for Chlamydia trachomatis was slightly increasing.

  • The highest rate was found among women aged 26–49

  • The rate of positive diagnoses for Chlamydia trachomatis infection was rising among women aged 26 to 49, as well as among those aged 15 to 25

• Gonococcal infection

  • A slight increase in the screening rate between 2021 and 2024, with a particularly high rate among women aged 26 to 49

  • Increase in the rate of positive diagnoses among men aged 26 to 49.

• Syphilis

  • Since 2020, the screening rate has increased further among women aged 26 to 49

  • Increase in the diagnosis rate in 2024: 3.1 per 1,000 inhabitants vs. 1.9 per 1,000 inhabitants in 2023, particularly among men over 50.