INTRODUCTION: Monitoring the HIV epidemic and identifying populations among whom HIV is spreading is critical. We aimed to provide an estimate of the annualized HIV incidence rate using recency testing among cisgender men who have sex with men (MSM) and transgender women (TGW) at a reference centre in Rio de Janeiro, Brazil. METHODS: We evaluated MSM and TGW who sought HIV testing at the Evandro Chagas National Institute of Infectious Diseases-FIOCRUZ between March 2018 and January 2020. The Limiting Avidity assay (LAg) as part of a recent infection testing algorithm (RITA) was employed to identify recent infections (those with a normalized optical density ≤1.5 in the LAg that met all RITA criteria) among those who tested positive for HIV and the annualized HIV incidence was estimated. RESULTS AND DISCUSSION: Out of 3053 individuals assessed, 2591 (84.9%) were HIV negative and 462 (15.1%) were living with HIV. Among these, 302 (65.4%) with stored samples available were evaluated and 73/302 (24.2%) were classified as recent infections. The annualized incidence rate estimate using a false recency rate of zero was 7.35% (95% CI 5.76% to 9.25%). CONCLUSIONS: Our results suggest that the HIV epidemic in Rio de Janeiro, Brazil, continues to disproportionately burden vulnerable populations, including MSM and TGW despite the existence and availability of effective preventive and therapeutic interventions.
INTRODUCTION: Monitoring the HIV epidemic and identifying populations among whom HIV is spreading is critical. We aimed to provide an estimate of the annualized HIV incidence rate using recency testing among cisgender men who have sex with men (MSM) and transgender women (TGW) at a reference centre in Rio de Janeiro, Brazil. METHODS: We evaluated MSM and TGW who sought HIV testing at the Evandro Chagas National Institute of Infectious Diseases-FIOCRUZ between March 2018 and January 2020. The Limiting Avidity assay (LAg) as part of a recent infection testing algorithm (RITA) was employed to identify recent infections (those with a normalized optical density ≤1.5 in the LAg that met all RITA criteria) among those who tested positive for HIV and the annualized HIV incidence was estimated. RESULTS AND DISCUSSION: Out of 3053 individuals assessed, 2591 (84.9%) were HIV negative and 462 (15.1%) were living with HIV. Among these, 302 (65.4%) with stored samples available were evaluated and 73/302 (24.2%) were classified as recent infections. The annualized incidence rate estimate using a false recency rate of zero was 7.35% (95% CI 5.76% to 9.25%). CONCLUSIONS: Our results suggest that the HIV epidemic in Rio de Janeiro, Brazil, continues to disproportionately burden vulnerable populations, including MSM and TGW despite the existence and availability of effective preventive and therapeutic interventions.
Authors: Emilia M Jalil; Thiago S Torres; Claudia C de A Pereira; Alessandro Farias; Jose D U Brito; Marcus Lacerda; Daila A R da Silva; Nickols Wallys; Gabriela Ribeiro; Joyce Gomes; Thiffany Odara; Ludymilla Santiago; Sophie Nouveau; Marcos Benedetti; Cristina Pimenta; Brenda Hoagland; Beatriz Grinsztejn; Valdilea G Veloso Journal: Int J Environ Res Public Health Date: 2022-02-02 Impact factor: 3.390
Authors: Shelley N Facente; Eduard Grebe; Andrew D Maher; Douglas Fox; Susan Scheer; Mary Mahy; Shona Dalal; David Lowrance; Kimberly Marsh Journal: JMIR Public Health Surveill Date: 2022-03-11