Key Points

HIV Infections and AIDS

• Participation in HIV Surveys

  • In 2023, fewer laboratories participated in the LaboVIH survey (80% vs. 97% in 2022). However, mandatory reporting of HIV cases is widely followed, with participation approaching 100%.

• HIV Testing

  • HIV testing continued to increase in 2023 in the Centre-Val de Loire region. However, it remains below the national average: 84 tests per 1,000 residents in the region, compared to 99 for mainland France excluding the Île-de-France region. Women are getting tested more than men (73 tests per 1,000 women versus 45.5 tests per 1,000 men).

• HIV Diagnosis

  • The number of people diagnosed with HIV is increasing in 2023, following a decline between 2018 and 2021. This increase primarily affects heterosexuals born abroad and men who have sex with men (MSM) born in France.

• HIV Incidence and Undiagnosed Individuals

  • It is estimated that 87 new HIV infections occurred in our region in 2023, a stable figure following several years of decline. At the end of 2023, approximately 271 people were still unaware that they were HIV-positive.

• AIDS Cases

  • The AIDS diagnosis rate was 7 cases per 1,000,000 inhabitants in 2023, a slight increase compared to 2022. Among those affected, only 11% knew their HIV-positive status before being diagnosed with AIDS.

Chlamydia trachomatis (Ct) infection

• The rate of Ct infection screening continues to rise in 2023.

• Those tested are primarily women, particularly those in the 15–25 age group, who are targeted by recommendations for regular screening. This population of young women also has the highest diagnosis rate, followed by men of the same age.

• Data provided by the CeGIDD (Free Centers for Information, Screening, and Diagnosis) reveal that the majority of infections occur during heterosexual intercourse.

Gonococcal infection

• The screening rate for gonococcal infections rose in 2023, with a notable increase in the number of tests performed.

• The groups most frequently tested are women aged 15–25 and 26–49.

• In terms of diagnoses, women aged 15–25 are the most affected, followed by men of the same age. However, a significant proportion of diagnoses also involve men aged 26–49.

• However, missing data related to this condition do not allow for definitive conclusions regarding the mode of transmission (heterosexual or homosexual).

Syphilis

• The syphilis screening rate continues to rise in the Centre-Val de Loire region, reaching a higher level among women, particularly those aged 15–25 and 26–49.

• In contrast, the syphilis diagnosis rate, which has remained stable for several years, is significantly higher among men, particularly in the 26–49 age group.

• The lack of data on modes of transmission limits conclusions regarding transmission dynamics.