High Rates Of Human Immunodeficiency Virus Infection Research Articles

The prevalence of hepatitis B virus, human T-lymphotropic virus and human immunodeficiency virus in patients receiving blood transfusions in South Africa.

South Africa has a high prevalence of human immunodeficiency virus (HIV) and hepatitis B virus (HBV) and to a lesser extent human T-lymphotropic virus (HTLV). Each of these agents is transfusion-transmissible (TT)but deciding whether to implement preventive screening depends upon knowledge of background prevalence in transfused patients. We determined the prevalence of HIV, HBV and HTLV I/II among blood transfusion recipients in South African hospitals. We obtained identity-unlinked samples used for blood cross-matching at 634 South African hospitals served by the South African National Blood Service (SANBS). The ABBOTT Alinity S® Immunochemiluminescent system measured HIV, HBV and HTLV I/II antibodies. Repeatedly reactive samples were confirmed using the Roche Cobas® 8000. Logistic regression was performed to investigate the determinants of associations for HIV, HBV and HTLV infections. The overall prevalences of HIV, HBV and HTLV were 37.8%, 7.4% and 0.6%, respectively. The HIV prevalence in blood recipients was twice as high as general population estimates. Public hospital patients had a significantly higher prevalence compared with private hospital patients for HIV and HBV. HIV prevalence was significantly higher in females, and HBV prevalence was significantly higher in males, excluding the unknown gender results. Patients receiving blood transfusions in South Africa have high rates of HIV and HBV infection that should be taken into consideration when determining donor screening strategies for other viral infections. Measurable prevalence of HTLV indicates endemicity of this infection in South Africa.

Clinical and Epidemiological Characteristics of the 2022 Mpox Outbreak in Spain (CEME-22 Study).

We conducted a multicentric national study (SEIMC-CEME-22), to describe the clinical and epidemiological profile of the mpox outbreak in Spain, including the management of the disease. This was a retrospective national observational study conducted by Sociedad Española de Enfermedades Infecciosas y Microbiología Clínica (SEIMC) and Foundation SEIMC-GESIDA. We included patients with a confirmed mpox diagnosis before 13 July 2022, and attended at the Spanish health network (the early phase of the outbreak). Epidemiological, clinical, and therapeutic data were collected. Of a total of 1472 patients from 52 centers included, 99% of them were cisgender men, mostly middle-aged, and 98.6% were residents in Spain. The main suspected route of transmission was sexual exposure, primarily among MSM. Occupational exposure was reported in 6 patients. Immunosuppression was present in 40% of patients, mainly due to human immunodeficiency virus (HIV). Only 6.5% of patients had been vaccinated against orthopoxvirus. Virus sequencing was performed in 147 patients (all B.1 lineage). Rash was the most frequent symptom (95.7%), followed by fever (48.2%), adenopathies (44.4%) myalgias (20.7%), proctitis (17%), and headache (14.7%). Simultaneously diagnosed sexually transmitted infections included syphilis (n = 129), gonococcal infection (n = 91), HIV (n = 67), chlamydia (n = 56), hepatitis B (n = 14), and hepatitis C (n = 11). No therapy was used in 479 patients (33%). Symptomatic therapies and antibiotics were used in 50% of cases. The most used therapy regimens were systemic corticoids (90 patients), tecovirimat (6 patients), and cidofovir (13 patients). Smallpox immunoglobulins were used in 1 patient. Fifty-eight patients were hospitalized, and 1 patient died. Mpox outbreak in Spain affected primarily middle-aged men who were sexually active and showed a high rate of HIV infection. A range of heterogeneous therapeutics options was performed.

Prevalence of HIV Sero-conversion and associated risk factors among antenatal clinic attendees in Enugu state university of science and technology teaching hospital, Enugu Nigeria

Background: Human immunodeficiency virus (HIV) infection is a leading cause of morbidity and mortality among women of reproductive age and it is a major contributor to maternal, infant and child morbidity and mortality. Globally, in 2015, an estimated, 78 million people had become infected with HIV while 35 million people had died from Acquired Immune Deficiency Syndrome (AIDS)-related illness since the start of the epidemic. In Nigeria, a national HIV prevalence rate of 3.4% was reported in 2012 with 1.3% in Enugu State. HIV retesting is a WHO recommendation that was adopted by Nigerian her national guideline. The essence of antenatal HIV retesting includes the identification of pregnant women who were first tested during their window periods and subsequently sero-converted, and those who acquired new HIV infection after their initial screening test given the fact that a single HIV testing may not be enough to diagnose HIV with findings of high rates of incident HIV infection during pregnancy and at the post-partum periods. It has been shown that the rate of MTCT was higher from sero-converting women compared with women with already established HIV infection. Hence, this study which gave a clue to the rate of HIV sero-conversion among our antenatal women which may possibly popularize the concept of retesting especially among these women. Aim: To determine the prevalence of HIV sero-conversion and the associated risk factors among previously sero-negative antenatal clinic attendees in Enugu State University of Science and Technology Teaching Hospital, (ESUTTH). Methods: This was a prospective, cohort study involving 415 sero-negative HIV women recruited from antenatal clinic in ESUTH from January to April, 2019 and followed up for 12 weeks. Information on their socio-demographic characteristics, pregnancy history, sexual lifestyle, and clinical profile were obtained using an interviewer-administered questionnaire. HIV tests were done at booking and repeated after 12 weeks using the Rapid Diagnostic Test kits by the parallel algorithm format. Data was analyzed with the IBM SPSS version 23.0. Measures of associations were determined with the Chi-Square test and binary logistic regression. P-value < 0.05 was assessed as statistically significant. Results: The mean age of the participants was 29.44±4.91SD years with a range of 16-43 years. Majority of them were married (397; 95.7%) and had post-secondary education (321; 77.3%). The incidence of HIV sero-conversion was 1.0%. Less than 35 years of age, being single, tobacco use, multiple sexual partners in pregnancy and knowledge of partners’ HIV status were significantly associated with HIV sero-conversion (p < 0.05). However, none of these factors was a significant predictor following logistic regression. Conclusion: The rate of HIV sero-conversion in pregnancy is of public health importance in Enugu and obligatory repeat testing, especially among women with these identified associated risk factors is therefore advised to forestall the menace of HIV to the child and the society at large.

HIV incidence among men who have sex with men (MSM) in Metro Manila, the Philippines: A prospective cohort study 2014-2018.

The human immunodeficiency virus (HIV) epidemic in the Philippines has been driven by sexual transmission among men who have sex with men (MSM) over the past 2 decades. As the incidence of HIV infection among MSM has not been extensively evaluated, this study aimed to determine the incidence of HIV infections and the associated risk factors among MSM in Metro Manila, Philippines.This prospective cohort study was conducted in 2 community centers in Metro Manila, the Philippines, between March 2014 and December 2018. MSM who had anal or oral sex in the past 12 months, aged ≥18 years, and confirmed HIV-negative status were enrolled. Participants were followed up every 3 months with repeat HIV testing and assessment of HIV-related practices.Of the 708 MSM included in this study, a total of 59 HIV seroconversions occurred during the follow-up, resulting in an incidence of 2.7 (95% confidence interval: 2.1–3.5) per 100 patient-years. Multivariate risk regression analysis indicated that age (P = .002) and anal sex with a consensual male partner in the past 3 months (P = .039) were significantly associated with HIV infection.Our study has shown high rates of incident HIV infection among Filipino MSM. This demonstrates the need for effective HIV prevention, surveillance, treatment, and intervention strategies targeting this population.

Patterns of Care and Outcomes of Vulvar Cancer Treatment in Women With or Without HIV Infection in Botswana

Vulvar cancer is a rare gynecological malignancy. However, the incidence of human papilloma virus (HPV)-associated vulvar disease is increasing, particularly in low- and middle- income countries. Human immunodeficiency virus (HIV) infection is also associated with an increased risk of vulvar cancer. Patterns of care for vulvar cancer in low resource-limited settings with high rates of HPV and HIV co-infection have not been well described. Women with vulvar cancer who presented to an oncology clinic in Botswana from January 2015 through October 2019 were prospectively enrolled in this observational cohort study. Factors associated with survival including age, HIV status, stage, and treatment were evaluated. Analysis of 128 women with vulvar cancer demonstrated a median age of 42 years. At presentation 53.3% of patients were early stage (stage I/II) and 46.6% were late stage (stage III/IV). The majority of patients were living with well-controlled HIV infection (89%, n = 107) with a median CD4 count of 461 cell/ul (IQR 300.5-684.5) and high level of viral suppression (95% with viral copies & <400). Surgery was performed in 25 (20.8%) patients, 29 (24%) patients received chemotherapy, and 81 (67.5%) received radiation therapy. Adjusted analysis controlling for HIV, age, stage, surgery, chemotherapy and radiation demonstrated no differences in survival at 32 months by HIV status (HR, 0.426; 95% CI, 0.112-1.5976). Advanced stage (stage III and IV) (HR, 2.41; (95% CI, 1.03-5.68) and older age (HR, 1.05; (95% CI, 1.00-1.10) were associated with worse survival while receipt of surgery was associated with improved survival (HR 0.09, 95% CI 0.15-0.74). Women in Botswana with vulvar cancer have a high rate of HIV infection. They present at a young age and just under half of patients present at a late stage. While decreased survival was associated with older age and late stage disease, HIV status did not impact survival outcomes. Efforts to identify patients early with limited disease burden may be necessary to improve outcomes in the future.

The spectrum of primary drug resistance of Mycobacterium tuberculosis in patients with tuberculosis in relation to human immunodeficiency virus status

To estimate the detection rate and spectrum of primary drug resistance of Mycobacterium tuberculosis (MBT) in patients with tuberculosis (TB) in relation to their human immunodeficiency virus (HIV) status in a region with high HIV infection rates (the Perm Territory) and to compare of drug-resistant MBT (DR-MBT) in patients with HIV/TB co-infection, by using phenotypic and molecular genetic testing (MGT) methods. The results of sputum bacteriological examination were analyzed in 178 HIV-infected patients and 354 non-HIV-infected individuals with a TB diagnosis made in the period July 1, 2014 to August 1, 2015. The diagnostic algorithm for all patients involved a duplicate sputum test for MBT by two techniques: fluorescence microscopy (FM) and inoculation into the Levenstein-Jensen dense culture medium. In patients with HIV/TB, the bacteriological examination was complemented with two more methods: detection of MBT DNA by a real-time polymerase chain reaction assay using the AmpliTube-RV system (Synthol, Russia); and inoculation into the Middlebrook liquid nutrient medium, by applying the automated BACTEC MGIT 960 system. In patients with HIV/TB, the sensitivity of FM proved to be lower than in those with TB (24.2 and 32.8%, respectively; p<0.05) and that of inoculations into the dense culture medium was comparable regardless of HIV status (60.7 and 57.1%, respectively; p>0.05). The primary drug resistance of MBT in patients with HIV-TB was higher than that in HIV-negative individuals (60.2 and 41.6%, respectively; p<0.05). The phenotypic method (inoculation into the Levenstein-Jensen culture medium) and MGT revealed their agreement for the resistance of MBT to rifampicin (the most clinically significant drug in the choice of treatment policy) in 88.5% of the patients with HIV/TB. In patients with HIV/TB, the sensitivity of FM for detecting acid-resistant mycobacteria was lower than in those with TB and that of inoculations into the dense medium was comparable regardless of HIV status.

Epidemiology of HIV-Associated Tuberculosis in Urumqi, China

The aim of this work was to understand the epidemiologic characteristics of TB and human immunodeficiency virus (HIV) dual infection cases, thus providing the basis for effective prevention and control measures. On the basis of HIV/TB screening of new and old TB and HIV/acquired immunodeficiency syndrome (AIDS) patients registered in 4 regions of Urumqi, Xinjiang, People's Republic of China, from 2012 to 2014, an analysis was made of the epidemiologic characteristics and risk factors of people suffering from HIV/TB dual infection. A total of 2,645 TB patients were tested for HIV antibodies, of whom 128 tested positive, showing a detection rate of 4.8%; TB patients ≥35 years old had 0.26 times (95% confidence interval [CI], 0.18–0.40) the risk of HIV infection than those 18–35 years old, and pulmonary and extrapulmonary TB patients with positive smear had, respectively, 0.43 times (95% CI, 0.28–0.66) and 1.79 times (95% CI, 1.09–2.94) the risk of HIV infection than those with negative smear. And 1,195 HIV/AIDS patients were screened for TB, of whom 91 were positive, showing an infection rate of 7.6%; male HIV/AIDS patients had 12.2 times (95% CI, 6.4–23.1) the risk of TB infection than female patients, and HIV/AIDS patients with CD4 cells ≤200/μL had 20.4 times (95% CI, 11.8–35.3) the risk of TB infection than those with CD4 cells >200/μL. TB and HIV/AIDS patients in Urumqi from 2012 to 2014 suffered from high HIV and TB infection rates, so relevant measures should be taken to intervene, especially for TB patients ≥35 years old, those with positive smear, extrapulmonary TB patients, male HIV/AIDS patients, and those with CD4 cells ≤200/μL.

Prevalence, correlates, and risk perception of HIV infection among heroin users in Central Taiwan

We investigated the prevalence and correlated factors of human immunodeficiency virus (HIV) among heroin users attending methadone maintenance treatment (MMT) programs in Central Taiwan, and explored the degree of risk perception of HIV infection among the participants. Our study participants were 781 heroin users seeking treatment at the MMT program at Tsaotun Psychiatric Center in Taiwan. The presence of HIV antibodies was identified by microparticle enzyme immunoassay and confirmed by western blot. Multivariate logistic regression was used to identify the independent correlates of HIV infection. The mean age of the sample was 36.1 years [standard deviation (SD) = 7.6]; of the patients, 710 (90.9%) were men. The prevalence of HIV infection among our study population was 20.7%. Multivariate logistic regression analysis revealed that HIV infection was independently associated with the age of the patients of initial heroin use, heroin injection use, nondrug-related criminal convictions, needle-sharing behaviors, and sharing injection paraphernalia. A strong agreement existed between self-reported HIV serostatus and the results of laboratory analyses, with 88.8% of patients reporting their condition correctly. We found a high rate of HIV infection among patients in the MMT program. Factors associated with HIV infection were mostly related to drug-use behaviors. These findings stress the importance of education regarding drug-risk behaviors.

The Role of Human Papillomavirus in Human Immunodeficiency Virus Acquisition in Men who Have Sex with Men: A Review of the Literature

Human Papillomavirus (HPV) infection is the most common sexually transmitted infection (STI) worldwide. Incidence rates of HPV infection among human immunodeficiency virus (HIV)-infected individuals are well documented and are several-fold higher than among HIV-uninfected individuals. Few studies have demonstrated an increased risk for acquiring HIV infection in those with HPV infection, and this risk seems to be higher when HPV strains are of high-risk oncogenic potential. The estimated prevalence of high-risk oncogenic HPV infection is highest in men who have sex with men (MSM), a particularly vulnerable group with high prevalence rates of HIV infection and other STIs. In this paper, we provide a comprehensive review of the available literature on the role of HPV infection in HIV acquisition. Our review includes data from cross-sectional and longitudinal studies.

Rapid Human Immunodeficiency Virus Testing in the Pediatric Emergency Department

Human immunodeficiency virus (HIV) continues to be a significant public health concern for adolescents and young adults. Since 2006, the Centers for Disease Control and Prevention has recommended more aggressive routine screening for HIV for patients presenting to the emergency department (ED). Our objectives were to design and validate a survey of physician barriers toward the use of rapid HIV testing in the pediatric ED and then to use this validated tool to conduct a national survey of pediatric emergency practitioners' attitudes toward rapid HIV testing in the ED. Survey design and initial validation steps were conducted with a panel of health care practitioners familiar to HIV testing. Several variables were identified as possible barriers toward rapid HIV testing. The survey was sent via electronic software to a national sample of pediatric emergency practitioners over 2 listservs. The previously identified variables were evaluated by factor analysis for internal consistency and homogeneity, and confirmatory factor analysis was conducted via promax and varimax rotation. All factor analyses were conducted using Stata software. Once the validation was complete, the surveys were sent to groups of pediatric emergency practitioners who had previously identified as having rapid HIV testing available in their EDs. Standard descriptive statistics were used, and group differences were evaluated with t test and χ(2) test. Four factors were identified during the validation process as being the most important barriers for rapid HIV testing in the pediatric ED: self efficacy, familiarity, external barriers, and a previously unidentified factor, which we interpreted as related to barriers to the specific environment of one's own ED. A total of 80 participants returned the final, validated survey. The participants came from 9 different pediatric emergency medicine groups (5 in areas of low rates of HIV infection, 4 in areas of high rates of HIV infection). Self-reported rates of testing were not different based on HIV infection rate in the community or the respondent's level of training. High testing was more common when a guideline was reported (39%) than when it was not (13.3%; difference, 25.7%; 95% confidence interval, 2.9%-48.5%). Of the 4 factors identified, we found statistically significant differences in scores on all 4 factors between high versus low testers, with high testers disagreeing more strongly with the various barrier questions proposed. We found no difference in the factor scores between areas of high versus low HIV infection rates. Our results suggest that several factors related to perceived provider barriers are associated with rates of HIV testing in the ED and that personal factors (eg, level of training) and community HIV prevalence were not associated with rates of testing. Our results confirm what has been speculated by numerous authors and provide data to inform efforts to improve compliance with national recommendations for increased testing.

Management of Patients Coinfected With HCV and HIV: A Close Look at the Role for Direct-Acting Antivirals

With the development of effective therapies against human immunodeficiency virus (HIV), hepatitis C virus (HCV) infection has become a major cause of morbidity and mortality among patients with both infections (coinfection). In addition to the high prevalence of chronic HCV, particularly among HIV-infected injection drug users, the rate of incident HIV infections is increasing among HIV-infected men who have sex with men, leading to recommendations for education and screening for HCV in this population. Liver disease is the second leading and, in some cases, a preventable cause of death among coinfected patients. Those at risk for liver disease progression are usually treated with a combination of interferon (IFN) and ribavirin (RBV), which is not highly effective; it has low rates of sustained virologic response (SVR), especially for coinfected patients with HCV genotype 1 and those of African descent. Direct-acting antivirals might overcome factors such as immunodeficiency that can reduce the efficacy of IFN. However, for now it remains challenging to treat coinfected patients due to interactions among drugs, additive drug toxicities, and the continued need for combination therapies that include pegylated IFN. Recently developed HCV protease inhibitors such as telaprevir and boceprevir, given in combination with pegylated IFN and RBV, could increase the rate of SVR with manageable toxicity and drug interactions. We review the latest developments and obstacles to treating coinfected patients.

Implementation of HIV Testing at 2 New York City Bathhouses: From Pilot to Clinical Service

Commercial sex venues (e.g., bathhouses) that cater to men who have sex with men (MSM) continue to function in most urban areas. These venues present a challenge to developing strategies to prevent the spread of the human immunodeficiency virus (HIV), but they also provide opportunities for interventions to reduce the risk and rate of disease transmission. Several cities in the United States have developed programs that offer HIV testing in these venues. Similar programs have not existed before in New York City. A pilot HIV testing program was implemented at 2 New York City bathhouses. Testing included rapid HIV testing, the use of the serologic testing algorithm for recent HIV seroconversion, and pooled plasma HIV viral load to detect and date incident and acute HIV infections. In addition to HIV tests, behavioral and demographic data were collected from 493 presumed HIV-negative participants. The pilot program recruited MSM who were at high risk for HIV infection. Of the 493 men tested, 20 (4%) were found to be positive for HIV, and 8 (40%) of these 20 men demonstrated evidence of acute or recent HIV infection. The program tested men often not tested in more traditional medical settings. Significant disparities were demonstrated in the testing habits of MSM who reported having sex with women and had not disclosed same-sex activities to their caregivers. Bathhouse-based testing for HIV infection can be implemented in New York City and would include a population of MSM who are at high risk for HIV infection. Because of the high rate of recent HIV infection, expanded testing in these venues may be a good strategy to reduce the forward transmission of HIV in this highly sexually active population.

Addressing Poverty as Risk for Disease: Recommendations from CDC's Consultation on Microenterprise as HIV Prevention

In March 2006, the Centers for Disease Control and Prevention (CDC) convened a consultation meeting to explore microenterprise as a potential human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) prevention intervention. The impulse to link microenterprise with HIV/AIDS prevention was driven by the fact that poverty is a significant factor contributing to the risk for infection. Because increasingly high rates of HIV infection are occurring among women, particularly among poor African American women in the southern United States, we focused the consultation on microenterprise as an intervention among that population. In the international arena, income generated by microenterprise has contributed to improving family and community health outcomes. This article summarizes the contributions made to the consultation by participants from the diverse fields of microenterprise, microfinance, women's studies, and public health. The article ends with recommendations for HIV/AIDS prevention and, by implication, addressing other public health challenges, through the development of multifaceted intervention approaches.

Prevalence and risk factors for HIV infection in pregnant women in North Trinidad

The prevalence of Human Immunodeficiency Virus (HIV) infection in the Caribbean is reported to be second only to sub Saharan Africa. HIV in pregnancy has become an increasingly important focus of attention in HIV research because of its role in contributing to spread of the infection. This study sought to establish the prevalence and risk factors associated with HIV infection among antenatal women in the northwest region of Trinidad. Using a cross-sectional survey design, interviews were conducted with each new pregnant attendee to the antenatal clinics in the county of St George West over a six-month period after informed consent was obtained. These women were all offered routine HIV testing in their antenatal assessment. Their HIV results were confirmed through the island's HIV monitoring facility. The interviews included questions on demographics, known risk factors for HIV infection, mental health history and related information on their partners. Women who had refused testing were also asked to give reasons for this. There was a total of 541 women attending the clinic for the first time during the six-month period Seven of them refused testing. Of the remaining 534 women, 37 were HIV positive (6.8%). Fourteen of the HIV positive women (37.8%) admitted to knowing of their status prior to becoming pregnant. Risk factors significantly associated with positive HIV status were early age of first sexual intercourse, a history of sexually transmitted disease, mental health problems and homelessness. Regression analysis established a history of sexually transmitted disease as the only independent predictor of HIV infection in this sample. These findings reveal a high rate of HIV infection among pregnant women in northwest Trinidad and suggest that having a history of sexually transmitted disease is a key determinant of this. Prevention efforts must therefore be targeted at identifying the factors which influence this and these include early sexual activity and the experience of childhood sexual abuse.

SEROINCIDENCE AND PHYLOGENY OF HUMAN IMMUNODEFICIENCY VIRUS INFECTIONS IN A COHORT OF COMMERCIAL SEX WORKERS IN MONTEVIDEO, URUGUAY

A cohort study involving 60 human immunodeficiency virus (HIV)-negative male transvestite commercial sex workers (CSWs) was conducted in Montevideo, Uruguay in 1999-2001. Serum samples were tested for HIV by an enzyme-linked immunosorbent assay screening with immunoblot confirmation. Six participants seroconverted for an incidence-density rate of 6.03 (95% confidence interval = 2.21-13.12) per 100 person-years. Inconsistent condom use during client sex (adjusted hazard ratio [AHR] = 6.7), during oral sex (AHR = 5.6), and at the last sexual encounter (AHR = 7.8), and use of marihuana (AHR = 5.4) were marginally associated with HIV seroconversion. Five samples were genotyped in the protease and reverse transcriptase regions; three were subtypes B and two were BF recombinants. Full genome analysis of four samples confirmed all three subtype B samples and one of the two BF recombinants. Male transvestite CSWs sustained a high rate of HIV infection. Larger prospective studies are required to better define subtypes and associated sexual and drug-related risk factors.

Crystal methamphetamine, its analogues, and HIV infection: medical and psychiatric aspects of a new epidemic.

The use of the recreational drug crystal methamphetamine among younger homosexual men is expanding, and with it, unsafe sex behaviors that increase the transmission of human immunodeficiency virus (HIV). This article reviews available literature on the medical and psychiatric morbidities associated with methamphetamine abuse in HIV-infected patients. Medical complications include hypertension, hyperthermia, rhabdoymyolysis, and stroke. One fatal case of ingestion of methamphetamine with HIV medication has been documented. Two fatal cases of ingestion of HIV medication with the amphetamine analogue n-methyl-3,4 methylenedioxymethamphetamine (MDMA, or "ecstasy") have also been reported. Some molecular researchers suggest that dopaminergic systems are vulnerable to the combined neurotoxicity of HIV infection and methamphetamine. Population surveys indicate high rates of HIV infection among methamphetamine abusers and high rates of unprotected anal intercourse during drug intoxication. Intoxication can sometimes produce paranoia, auditory hallucinations, and, occasionally, violent behavior. Amphetamine withdrawal commonly results in symptoms of depression. Methamphetamine is a new challenge related to treatment and prevention of HIV infection.

MSJAMA. Human immunodeficiency virus and quarantine in Cuba.

IN 1986, 1 YEAR AFTER DOCUMENTING ITS FIRST CASE OF AIDS, Cuba instituted the world’s only mandatory quarantine policy for people with human immunodeficiency virus (HIV) infection. The Cuban Ministry of Health began widespread HIV testing, focused on but not limited to members of groups considered to be at high risk due to their travel or sexual histories. In 1986 alone, the ministry invested $3 million in testing equipment. By 1993, 12 million tests had been conducted in a country with 11 million citizens. Cubans with HIV infection were confined in newly constructed sanatoriums across the island and were questioned by health workers about past sexual partners for contact tracing and testing. Critics of Cuba’s quarantine policy charged that it violated human rights, while supporters applauded Cuba’s commitment to HIV control. In 1994, the quarantine was officially lifted. However, by 2003, half of all HIVpositive Cubans still lived in the sanatoriums. Cuba’s early response to HIV was unique in the world, but so were the circumstances of its quarantine. First, as an island and a Communist country, Cuba was geographically, politically, and socially isolated from North American and Western European countries that reported high HIV infection rates. Second, Cuba’s Communist political culture did not recognize individual rights as an impediment to its public health measures. Third, compared with other resource-poor nations, Cuba had a well-developed health care system that assigned a primary care physician to all citizens and conducted routine surveillance for infectious disease, and in which universal HIV testing and contact tracing was theoretically feasible. In addition, the Cuban government prioritized HIV care and by the 1990s devoted $15 million to $20 million annually to providing antiretroviral drug therapy, intensive medical care, high-quality food, and housing to quarantined patients. In 2002, the Cuban government reported an HIV prevalence of 0.03%, nearly 11 times lower than that in the United States. International health organizations have reported confidence in Cuba’s HIV reporting system. While Cuban government officials have stated that HIV screening and quarantine were both necessary to maintain the low HIV prevalence on the island, at least 3 other factors could explain the epidemiology of HIV in Cuba. First, since Cuba has been politically and socially isolated from countries with a high prevalence of HIV, social-sexual exchange with regions with high HIV prevalence in the 1980s was limited. Second, Farmer has argued that because of guaranteed minimum levels of income and access to education, housing, and health care, Cubans were less susceptible to important risk factors of HIV transmission such as poverty and social inequality. Third, aggressive HIV screening and subsequent contact tracing and counseling of infected individuals may have slowed the rate of HIV transmission independent of quarantine. No systematic epidemiological studies of HIV infection in Cuba have been published that would clarify the relative effects of quarantine, social/political isolation, living standards, or testing and tracing on HIV infection rates. Although residence in HIV sanatoriums is no longer mandatory for HIV-positive Cubans, Cuba continues to rely on the sanatorium system as transitional counseling and care facilities. In 1997, the Cuban health ministry announced that Cuba’s HIV infection rate was rising. Since Cuba’s economic crisis in the early 1990s, tourism has generated 43% of Cuba’s balance of payments. No longer socially isolated, Cuba is home to what the international press describes as a prominent sex trade in Havana centered on tourists. Cuba’s prohibition of unofficial community-based health activism may have impeded grassroots HIV prevention efforts, especially among groups contributing to the majority of new infections, such as men who have sex with men. Meanwhile, sexually active Cubans in Havana have reported feeling less susceptible to HIV infection via sexual transmission because of Cuba’s rigorous and successful public health measures in controlling infection rates.

Report on consensus conference on cervical cancer screening and management A meeting of the International Network on Control of Gynaecological Cancers (INCGC) was held in Tunis, January 28–31, 1999. This was a follow-up to a World Health Organization (WHO) Consultation on the Control of Cervical Cancer In Developing Countries held in 1994 at which the Network had been formed (Memorandum,

Report on consensus conference on cervical cancer screening and management A meeting of the International Network on Control of Gynaecological Cancers (INCGC) was held in Tunis, January 28–31, 1999. This was a follow-up to a World Health Organization (WHO) Consultation on the Control of Cervical Cancer In Developing Countries held in 1994 at which the Network had been formed (Memorandum,

High Rates of HIV Infection among Injection Drug Users Participating in Needle Exchange Programs in Montreal: Results of a Cohort Study

Needle exchange programs (NEPs) are designed to prevent human immunodeficiency virus (HIV) transmission among injection drug users. Although most studies report beneficial effects in terms of behavior modification, a direct assessment of the effectiveness of NEPs in preventing HIV infection has been lacking. A cohort study was conducted to assess the association between risk behaviors and HIV seroprevalence and seroincidence among injection drug users in Montreal, Canada. The association between NEP use and HIV infection was examined in three risk assessment scenarios using intensive covariate adjustment for empirical confounders: a cross-sectional analysis of NEP use at entry as a determinant of seroprevalence, a cohort analysis of NEP use at entry as a predictor of subsequent seroconversion, and a nested case-control analysis of NEP participation during follow-up as a predictor of seroconversion. From September 1988 to January 1995, 1,599 subjects were enrolled with a baseline seroprevalence of 10.7%. The mean follow-up period was 21.7 months. The adjusted odds ratio for HIV seroprevalence in injection drug users reporting recent NEP use was 2.2 (95% confidence interval 1.5-3.2). In the cohort study, there were 89 incident cases of HIV infection with a cumulative probability of HIV seroconversion of 33% for NEP users and 13% for nonusers (p < 0.0001). In the nested case-control study, consistent NEP use was associated with HIV seroconversion during follow-up (odds ratio = 10.5, 95% confidence interval 2.7-41.0). Risk elevations for HIV infection associated with NEP attendance were substantial and consistent in all three risk assessment scenarios in our cohort of injection drug users, despite extensive adjustment for confounders. In summary, in Montreal, NEP users appear to have higher seroconversion rates then NEP nonusers.

High prevalence of hepatitis B, C, and E markers in young sexually active adults from the Central African Republic.

The Central African Republic is located in tropical Africa, where both the human immunodeficiency virus (HIV) and hepatitis B virus (HBV) are highly endemic. The exact prevalence of hepatitis C virus (HCV) and hepatitis E virus (HEV) markers in this country is unknown. The aim of the study was to determine, according to HIV and HBV serostatus, the prevalence of these markers in young sexually active adults in the Central African Republic. One hundred and fifty-seven consecutive patients attending the National Centre for Sexually Transmitted Diseases in Bangui were included. The following serological markers were examined: (i) anti-HIV1 and anti-HIV2 antibodies; (ii) markers of HBV infection; (iii) anti-HCV antibodies; (iv) anti-HEV antibodies. Anti-HIV1 antibodies were found in 31 of the 157 patients (20%). The prevalence of anti-HBc antibodies, reflecting exposure to HBV, was 140/157 (89%) and 45 had detectable anti-HBs antibodies. Twenty-two patients (14%) were chronic carriers of hepatitis B surface antigen (HBsAg), but only one was HBe antigen-positive. Anti-HCV antibodies were found in 8 persons (5%) and anti-HEV antibodies in 38 (24%). No difference was found in the prevalence of these markers according to the presence or absence of anti-HIV antibodies. This study confirms the high rate of HIV infection, HBV exposure and chronic carriage of HBsAg in sexually active young adults in the Central African Republic. A high prevalence of HCV markers was found in this population, similar to that reported in neighbouring countries, together with a high rate of HEV markers, suggesting that HEV is endemic in this region.