Les interventions de dépistage et de traitement en milieu communautaire sont essentielles pour contrôler une récente épidémie de VIH parmi les personnes qui s'injectent des drogues à Glasgow : Une étude de modélisation

Allen et al. révèlent la valeur des interventions communautaires pour prévenir les épidémies de VIH, en soulignant la possibilité d'intensifier les services destinés aux communautés de consommateurs de drogues pour éviter les épidémies. Pour en savoir plus, en anglais, veuillez lire les informations ci-dessous.

Background: A human immunodeficiency virus (HIV) outbreak was identified among people who inject drugs (PWID) in Glasgow in 2015, with >150 diagnoses by the end of 2019. The outbreak response involved scaling up HIV testing and improving HIV treatment initiation and retention.

Methods: We parameterized and calibrated a dynamic, deterministic model of HIV transmission among PWID in Glasgow to epidemiological data. We use this model to evaluate HIV testing and treatment interventions. We present results in terms of relative changes in HIV prevalence, incidence, and cases averted.

Results: If the improvements in both testing and treatment had not occurred, we predict that HIV prevalence would have reached 17.8% (95% credible interval [CrI], 14.1%–22.6%) by the beginning of 2020, compared to 5.9% (95% CrI, 4.7%–7.4%) with the improvements. If the improvements had been made on detection of the outbreak in 2015, we predict that peak incidence would have been 26.2% (95% CrI, 8.8%–49.3%) lower and 62.7% (95% CrI, 43.6%–76.6%) of the outbreak cases could have been averted. The outbreak could have been avoided if the improvements had already been in place.

Conclusions: Our modeling suggests that the HIV testing and treatment interventions successfully brought the HIV outbreak in Glasgow under control by the beginning of 2020.