P149 In our continued studies to assess the association of the human T-lymphotropic virus type I virus (HTLV-I) and idiopathic facial nerve palsy of the lower motor neuron type (LMN), 93 patients admitted to the Port-of-Spain General Hospital, Trinidad, the West Indies, with a confirmed diagnosis of idiopathic facial nerve palsy were enrolled. Cases were compared with two control groups; a population-based group of persons aged 20 years and older and a hospital-based group of patients aged 15-84 years admitted to the medical wards. 74 were Trinidadians of African origin and 19 were Trinidadians of East Indian origin. As in the general population survey, none of the East Indian patients was HTLV-I antibody positive. Of the 74 Afro-Trinidadians with idiopathic LMN facial nerve palsy, 19.7% were HTLV-I positive. This was statistically higher than the HTLV-I seroprevalence in the Afro-Trinidadian general population controls (3.5%) and the hospital controls (5.6%). After age-standardization, the HTLV-I prevalence for patients with facial nerve palsy remained statistically significant. Four other patients were HTLV-I infected, and 4 were co-infected with HIV-1 and HTLV-I. Our study confirms the association of HTLV-I and idiopathic facial nerve palsy of the lower motor neuron type in Trinidad and Tobago. Further studies are continuing including the prevalence of co-infection with HIV-1 and HTLV-I in patients with idiopathic LMN facial nerve palsy.
Adult T7hyphen;cell leukemia/lymphoma (ATL), a rare outcome of infection with human T-lymphotropic virus (HTLV-I), is endemic in central Brooklyn, which has a large Caribbean migrant population. Previous studies have suggested that HTLV-I prevalence in central Brooklyn may be similar to that recorded in the Caribbean islands. We established a pilot 1-year surveillance program to identify cases of ATL in 7 of 10 hospitals serving the residents of 18 zip codes of central Brooklyn with a combined population of 1,184,670. Of the 6,198 in-patient beds in the catchment area, approximately 83% were covered. Twelve incident cases of ATL were ascertained, all among persons of Afro-Caribbean descent, indicating an annual incidence in African-Americans in this community of approximately 3.2/100,000 person-years. Unexplained hypercalcemia was the most useful screening method, identifying 3 of 5 patients not referred for possible ATL by a local hematologist. The female:male ratio was 3:1. The age pattern was different from that reported in the Caribbean Basin and closer to the pattern seen in Japan. Our study supports evidence that HTLV-I infection and ATL are endemic in central Brooklyn and suggests that a more intensive surveillance program for this disease coupled with intervention efforts to reduce HTLV-I transmission are warranted. Int. J. Cancer 80:662–666, 1999. Published 1999 Wiley-Liss, Inc.
HTLV-I is sexually transmitted more efficiently from men to women than vice versa, and the majority of HTLV-I endemic areas report a female preponderance of HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP) cases. The objective of this study was to estimate the gender- and age-specific incidence rates of HAM/TSP in the general population as well as in the HTLV-I-infected population in Jamaica and in Trinidad and Tobago. Incidence rates for HAM/TSP were computed based on all reported incident cases in both countries between 1990 and 1994. Population census reports for 1990 were used to calculate the population at risk. The age-standardized HAM/TSP incidence rate (mean ± stardard error of the mean) in Jamaica was 1.8 ± 0.2/100,000 person years (PY). Among individuals of African descent in Trinidad and Tobago, the rate was 1.7 ± 0.4/100,000 PY. As in HTLV-I seroprevalence, the incidence rate of HAM/TSP increased with age through the fifth decade of life and was three times as high in women than in men. The HAM/TSP incidence rate, calculated as a function of the number of HTLV-I-infected persons in each age stratum, is higher in women (24.7/100,000 PY) than in men (17.3/100,000 PY). With HTLV-I infection, the lifetime risk of developing HAM/TSP was estimated to be 1.9% overall and is slightly higher in women (1.8%) than in men (1.3%). Thus, the higher prevalence of HTLV-I in women in endemic areas does not fully explain the preponderance of female HAM/TSP, suggesting that other cofactors must be present. The higher incidence rate in women between the ages of 40 and 59 years, as well as the increase in HAM/TSP incidence rates with age, are indicative of the importance of adult-acquired HTLV-I infection, presumably through sexual transmission.
This publication addresses research questions related to an increase in the levels of access and utilization for four key interventions that have the potential to significantly reduce HIV infections among People Who Inject Drugs (PWID) and their sexual and injecting partners, and hence morbidity and mortality in low and middle-income countries (LMIC). These interventions are drawn from nine consensus interventions that comprise a 'comprehensive package' for PWID. The four interventions are: Needle and Syringe Programs (NSP), Medically Assisted Therapy (MAT), HIV Counseling and Testing (HCT), and Antiretroviral Therapy (ART). The book summarizes the results from several recent reviews of studies related to the effectiveness of the four key interventions in reducing risky behaviors in the context of transmitting or acquiring HIV infection. Overall, the four key interventions have strong effects on the risk of HIV infection among PWID via different pathways, and this determination is included in the documents proposing the comprehensive package of interventions. In order to attain the greatest effect from these interventions, structural issues must be addressed, especially the removal of punitive policies targeting PWID in many countries. The scientific evidence presented here, the public health rationale, and the human rights imperatives are all in accord: we can and must do better for PWID. The available tools are evidence-based, right affirming, and cost effective. What are required now are political will and a global consensus that this critical component of global HIV can no longer be ignored and under-resourced.
Background Recent reports of high HIV infection rates among men who have sex with men (MSM) from Asia, Africa, Latin America, and the former Soviet Union (FSU) suggest high levels of HIV transmission among MSM in low- and middle-income countries. To investigate the global epidemic of HIV among MSM and the relationship of MSM outbreaks to general populations, we conducted a comprehensive review of HIV studies among MSM in low- and middle-income countries and performed a meta-analysis of reported MSM and reproductive-age adult HIV prevalence data. Methods and Findings A comprehensive review of the literature was conducted using systematic methodology. Data regarding HIV prevalence and total sample size was sequestered from each of the studies that met inclusion criteria and aggregate values for each country were calculated. Pooled odds ratio (OR) estimates were stratified by factors including HIV prevalence of the country, Joint United Nations Programme on HIV/AIDS (UNAIDS)–classified level of HIV epidemic, geographic region, and whether or not injection drug users (IDUs) played a significant role in given epidemic. Pooled ORs were stratified by prevalence level; very low-prevalence countries had an overall MSM OR of 58.4 (95% CI 56.3–60.6); low-prevalence countries, 14.4 (95% CI 13.8–14.9); and medium- to high-prevalence countries, 9.6 (95% CI 9.0–10.2). Significant differences in ORs for HIV infection among MSM in were seen when comparing low- and middle-income countries; low-income countries had an OR of 7.8 (95% CI 7.2–8.4), whereas middle-income countries had an OR of 23.4 (95% CI 22.8–24.0). Stratifying the pooled ORs by whether the country had a substantial component of IDU spread resulted in an OR of 12.8 (95% CI 12.3–13.4) in countries where IDU transmission was prevalent, and 24.4 (95% CI 23.7–25.2) where it was not. By region, the OR for MSM in the Americas was 33.3 (95% CI 32.3–34.2); 18.7 (95% CI 17.7–19.7) for Asia; 3.8 (95% CI 3.3–4.3) for Africa; and 1.3 (95% CI 1.1–1.6) for the low- and middle-income countries of Europe. Conclusions MSM have a markedly greater risk of being infected with HIV compared with general population samples from low- and middle-income countries in the Americas, Asia, and Africa. ORs for HIV infection in MSM are elevated across prevalence levels by country and decrease as general population prevalence increases, but remain 9-fold higher in medium–high prevalence settings. MSM from low- and middle-income countries are in urgent need of prevention and care, and appear to be both understudied and underserved.
Introduction The HIV epidemic in the Caribbean is one of the few epidemics in the world that is dominated by subtype B and has a heterosexual transmission pattern. Close examination of the Caribbean subtype B viruses by full genome sequencing may shed light on the epidemic. Methods: Serum samples from Trinidad and Tobago (TT), Jamaica (JM), Haiti (HT) and the Dominican Republic (DO) were collected for characterization. CDNA synthesized from viral RNA was PCR amplified and sequenced with an ABI 3100 sequencer.
