High level of pre-treatment and acquired HIV drug resistance in Honduras: a nationally representative survey, 2016-17.

BACKGROUND: Pre-treatment HIV drug resistance (HIVDR) to NNRTIs has consistently increased in low-/middle-income countries during the last decade. OBJECTIVES: To estimate the prevalence of pre-treatment HIVDR and acquired HIVDR among persons living with HIV (PLHIV) on ART for 12 ±âŸ3 months (ADR12) and ≥48 months (ADR48) in Honduras. PATIENTS AND METHODS: A nationwide cross-sectional survey with a two-stage cluster sampling was conducted from October 2016 to November 2017. Twenty-two of 54 total ART clinics representing >90% of the national cohort of adults on ART were included. HIVDR was assessed for protease and reverse transcriptase Sanger sequences using the Stanford HIVdb tool. RESULTS: A total of 729 PLHIV were enrolled; 26.3% (95% CI 20.1%-33.5%) ART initiators reported prior exposure to antiretrovirals. Pre-treatment HIVDR prevalence was 26.9% (95% CI 20.2%-34.9%) to any antiretroviral and 25.9% (19.2%-33.9%) to NNRTIs. NNRTI pre-treatment HIVDR was higher in ART initiators with prior exposure to antiretrovirals (P = 0.001). Viral load (VL) suppression rate was 89.7% (85.1%-93.0%) in ADR12 and 67.9% (61.7%-73.6%) in ADR48. ADR12 to any drug among PLHIV with VL ≥1000 copies/mL was 86.1% (48.9%-97.6%); 67.1% (37.4%-87.5%) had HIVDR to both NNRTIs and NRTIs, and 3.8% (0.5%-25.2%) to PIs. ADR48 was 92.0% (86.8%-95.3%) to any drug; 78.1% (66.6%-86.5%) to both NNRTIs and NRTIs, and 7.3% (1.8%-25.1%) to PIs. CONCLUSIONS: The high prevalence of NNRTI pre-treatment HIVDR observed in Honduras warrants consideration of non-NNRTI-based first-line regimens for ART initiation. Programmatic improvements in HIVDR monitoring and adherence support may also be considered.

Short communication: HIV incidence among vulnerable populations in Honduras: results from an integrated behavioral and biological survey among female sex workers, men who have sex with men, and Garifuna in Honduras, 2006.

Honduras has one of the highest HIV prevalence rates in Central America. Data on HIV incidence are needed to identify groups at greatest need of prevention interventions to inform the national HIV response. We applied a test for recent infection to HIV-positive specimens from a biological and behavioral survey to estimate assay-derived incidence among men who have sex with men (MSM), female sex workers (FSW), and the Garifuna population in Honduras. Assay-derived estimates were compared to the mathematically modeled estimates in the same populations to assess plausibility of the assay-based estimates. Assay-derived incidence was 1.1% (95% CI 0.2-2.0) among MSM, 0.4% (95% CI 0.1-0.8) among the Garifuna, and 0% (95% CI 0-0.01) among FSWs. The modeled incidence estimates were similar at 1.03% among MSM, 0.30% among the Garifuna, and 0.23% among FSWs. HIV incidence based on the assay was highest among MSM in Honduras, lowest among FSWs, and similar to modeled incidence in these groups. Targeted programs on HIV prevention, care, and treatment are urgently needed for the MSM population. Continued support for existing prevention programs for FSWs and Garifuna are recommended.

Unsafe sexual behaviors among HIV-positive men and women in Honduras: the role of discrimination, condom access, and gender.

BACKGROUND: We conducted a study among HIV-positive men and women in Honduras to describe demographics, HIV risk behaviors and sexually transmitted infection prevalence, and identify correlates of unsafe sex. METHODS: Participants were recruited from HIV clinics and nongovernmental organizations in Tegucigalpa and San Pedro Sula, Honduras in a cross-sectional study in 2006. We used audio-assisted computer interviews on demographics; behaviors in the past 12 months, 6 months, and 30 days; and access to care. Assays performed included herpes (HSV-2 Herpes Select), syphilis (rapid plasma reagin [RPR] and Treponema pallidum particle agglutination assay [TPPA]) serology, and other sexually transmitted infections by polymerase chain reaction (PCR). Bivariate and multivariate analyses were conducted to assess variables associated with unprotected sex across all partner types in the past 12 months. RESULTS: Of 810 participants, 400 were from Tegucigalpa and 410 from San Pedro Sula; 367 (45%) were men. Mean age was 37 years (interquartile range: 31-43). Consistent condom use for men and women was below 60% for all partner types. In multivariate analysis, unprotected sex was more likely among women (odds ratio [OR]: 1.9, 95% confidence interval [CI]: 1.2-3.1, P = 0.007), those with HIV diagnoses within the past year (OR: 2.0, 95% CI: 1.1-3.7, P = 0.016), those reporting difficulty accessing condoms (OR: 2.6, 95% CI: 1.4-4.7, P = 0.003), and those reporting discrimination (OR: 1.8, 95% CI: 1.1-3.0, P = 0.016). CONCLUSIONS: Programs targeting HIV-positive patients need to address gender-based disparities, improve condom access and use, and help establish a protective legal and policy environment free of stigma and discrimination.

Transmitted drug resistance and type of infection in newly diagnosed HIV-1 individuals in Honduras.

BACKGROUND: Transmitted drug resistance (TDR) reduces the efficacy of antiretroviral treatment and is a public health concern. OBJECTIVES: To gain insight in the epidemiology of TDR in Honduras by evaluating the amount of TDR in a representative sample of newly diagnosed individuals and by determining whether these are recent or established infections. STUDY DESIGN: Two hundred treatment-naïve, newly diagnosed HIV-positive individuals representing different population groups (general population, Garifunas ethnic group, female sex workers and men who have sex with men) and different geographic regions were enrolled during April 2004-April 2007. The HIV-1 pol gene was sequenced to identify drug-resistant mutations and TDR was scored as recommended by the WHO. Specimens were classified as recent or established infections using the BED assay. RESULTS: Among 200 samples analyzed from Honduran patients the prevalence of TDR was 7% (95% CI: 3.9-11.5%), 5% for non-nucleoside reverse transcriptase inhibitors (NNRTIs), 3% for nucleoside reverse transcriptase inhibitors (NRTIs) and 0.5% for protease inhibitors (PIs). Testing of these samples with the BED assay revealed that 12% of the specimens were associated with recent infections. TDR was significantly more common in specimens with recent infection (21%) than established infection (5%) (p=0.016). CONCLUSIONS: The prevalence of TDR in Honduras was moderate (7%). The percentage of specimens who were recently infected was low (12%), suggesting that late HIV diagnosis is common. The TDR prevalence was higher in recent than in established infections, which may indicate that TDR is increasing over time. The higher prevalence of NNRTI and NRTI mutations as compared to PI mutations is probably due to a broader and longer use of these drugs in Honduras.

High rates of STD and sexual risk behaviors among Garífunas in Honduras.

BACKGROUND: Honduras has the highest concentration of HIV and AIDS cases in Central America, with an estimated adult HIV prevalence of 1.5%. Prevalence is higher among certain ethnic groups such as the Garífuna with a reported HIV prevalence of 8%. METHODS: A biological and behavioral survey was conducted on a stratified random sample of the Garífuna population in Honduras, using computer-assisted interviews. Blood was tested for HIV, herpes simplex type 2 (HSV-2), and syphilis; urine was tested for Chlamydia trachomatis, Neisseria gonorrhoea, Trichomonas vaginalis, and Mycoplasma genitalum. RESULTS: We enrolled a total of 817 participants, 41% female and 51% male. Estimated prevalences and 95% confidence intervals (CI) were: HIV, 4.5% (95% CI: 3.0 to 6.6), HSV-2, 51.1% (95% CI: 46.7 to 55.6), and syphilis seropositivity, 2.4% (95% CI: 1.4 to 4.0). Sexually transmitted infections in urine were: chlamydia, 6.8% (95% CI: 4.7 to 9.7), gonorrhea, 1.1% (95% CI: 0.4 to 2.9), trichomoniasis, 10.5% (95% CI: 8.1 to 13.6), and Mycoplasma genitalium, 7.1% (95% CI: 5.1 to 9.9). Consistent condom use was low with stable (10.6%) and casual (41.4%) partners. In multivariate analysis, HIV was associated with rural residence. HSV-2 was associated with female sex, older age, and syphilis seropositivity. CONCLUSIONS: We found a moderate prevalence of HIV and a high prevalence of HSV-2 among the Garífunas. HSV-2 may increase the vulnerability of these populations to HIV in the future. Intervention strategies should emphasize sexually transmitted infection control and condom promotion, specifically targeting the Garífuna population.