Care of HIV-infected adults at Baragwanath Hospital, Soweto

Part I. Clinical management and costs of outpatient careObjective. To provide a detailed breakdown of clinical presentations and management of outpatients with HIV. and associated costs, in order to inform clinical practice, health service planning and projections of the costs of HIV care in South AfricaSetting. The outpatient department of a public sector, academic hospital in Soweto, South AfricaDesign. A retrospective, descriptive study using a record review and a combination of direct and step-down costing of health service costs (1992 prices).Patients. All 179 patients with HIV seen at the outpatient department between 1989 and 1992.Results. The average age at presentation was 30 years for men and 29 years for women. The most common clinical presentations at first viSIT were lymphadenopathy, weight loss, peripheraJ neuropathy and tuberculosis. Many patients, however, were asymptomatic. Analysis of clinical presentations, investigations and drugs used indicated that at least 80% of patients could have been managed at primary care leveL The average cost per consultation was R112.03. Costs per patient and per visit increased with stage of disease. Most of the costs arose from variable costs, which are influenced by clinical management decisions. Laboratory investigations (30%), staff (21 %) and drugs (22%), especially for fungal, viral and tuberculosis infection, were the major contributors to costs.Conclusions. Given projected HIV infection rates and the associated, potentially enormous costs of care revealed by this study, clinicians and health service planners must identify and implement cost-effective approaches to investigating, treating and meeting other health care needs of HIV-infected people. Treatment of people with HIV at primary care outpatient services seems both possible and potentially more cost-effective than hospital-level care in South Africa Emphasis should be placed on building primary level capacity to take on this role effectively. Further studies are required to identify the costeffectiveness, not only of treating HIV-related conditions, but also of treating other diseases if just and adequately infonned decisions about rationing of care are required in view of resource constraints

Influenza- and respiratory syncytial virus-associated adult mortality in Soweto

Background: Influenza and respiratory syncytial virus (RSV) infections cause seasonal excess mortality and hospitalisation in adults, particularly the elderly, in high-income countries. Little information exists on the impact of these infections on African adults. Objectives: To estimate influenza- and RSV -related adult mortality, stratified by age, and hospitalisation in Soweto, South Africa. Study design: A retrospective hospital-based study in Soweto from 1997-1999 to estimate influenza- and RSV -related excess all-cause deaths and hospitalisation using a rate-difference method. It was based on influenza seasons of varying severity provided by surveillance data. Results: Influenza seasons were significantly associated with excess mortality in adults across all 3 years, except for 18-64 year olds in 1998. Excess mortality was highest in those ≥65 years of age, 82.8 /100 000 population in the mild 1997 season and 220.9 / 100 000 in the severe 1998 season. Influenza significantly increased adult medical hospitalisation in the severe 1998 season alone. RSV did not significantly affect mortality or hospitalisation. Conclusions: Influenza-related mortality was substantial and disproportionately affected the elderly. Influenza vaccination for the elderly needs consideration. The RSV -related burden was not significantly increased but merits observation over a longer period.

Imputing direct and indirect vaccine effectiveness of childhood pneumococcal conjugate vaccine against invasive disease by surveying temporal changes in nasopharyngeal pneumococcal colonization

The limited capabilities in most low-middle income countries to study the benefit of pneumococcal conjugate vaccine (PCV) against invasive pneumococcal disease (IPD), calls for alternate strategies to assess this. We used a mathematical model, to predict the direct and indirect effectiveness of PCV by analyzing serotype specific colonization prevalence and IPD incidence prior to and following childhood PCV immunization in South Africa. We analyzed IPD incidence from 2005-2012 and colonization studies undertaken in HIV-uninfected and HIV-infected child-mother dyads from 2007-2009 (pre-PCV era), in 2010 (7-valent PCV era) and 2012 (13-valent PCV era). We compared the model-predicted to observed changes in IPD incidence, stratified by HIV-status in children >3 months to 5 years and also in women aged >18-45 years. We observed reductions in vaccine-serotype colonization and IPD due to vaccine serotypes among children and women after PCV introduction. Using the changes in vaccine-serotype colonization data, the model-predicted changes in vaccine-serotype IPD incidence rates were similar to the observed changes in PCV-unvaccinated children and adults, but not among children <24 months. Surveillance of colonization prior and following PCV use can be used to impute PCVs' indirect associations in unvaccinated age groups, including in high HIV-prevalence settings

Persistent High Burden of Invasive Pneumococcal Disease in South African HIV-Infected Adults in the Era of an Antiretroviral Treatment Program

Highly active antiretroviral treatment (HAART) programs have been associated with declines in the burden of invasive pneumococcal disease (IPD) in industrialized countries. The aim of this study was to evaluate trends in IPD hospitalizations in HIV-infected adults in Soweto, South Africa, associated with up-scaling of the HAART program from 2003 to 2008.Laboratory-confirmed IPD cases were identified from 2003 through 2008 through an existing surveillance program. The period 2003-04 was designated as the early-HAART era, 2005-06 as the intermediate-HAART era and 2007-08 as the established-HAART era. The incidence of IPD was compared between the early-HAART and established-HAART eras in HIV-infected and-uninfected individuals.A total of 2,567 IPD cases among individuals older than 18 years were reported from 2003 through 2008. Overall incidence of IPD (per 100,000) did not change during the study period in HIV-infected adults (207.4 cases in the early-HAART and 214.0 cases in the established-HAART era; p = 0.55). IPD incidence, actually increased 1.16-fold (95% CI: 1.01; 1.62) in HIV-infected females between the early-and established-HAART eras (212.1 cases and 246.2 cases, respectively; p = 0.03). The incidence of IPD remained unchanged in HIV-uninfected adults across the three time periods.Despite a stable prevalence of HIV and the increased roll-out of HAART for treatment of AIDS patients in our setting, the burden of IPD has not decreased among HIV-infected adults. The study indicates a need for ongoing monitoring of disease and HAART program effectiveness to reduce opportunistic infections in African adults with HIV/AIDS, as well as the need to consider alternate strategies including pneumococcal conjugate vaccine immunization for the prevention of IPD in HIV-infected adults

Antiretroviral Outcomes in South African Prisoners: A Retrospective Cohort Analysis

Background and Methods: Little is known about antiretroviral therapy (ART) outcomes in prisoners in Africa. We conducted a retrospective review of outcomes of a large cohort of prisoners referred to a public sector, urban HIV clinic. The review included baseline characteristics, sequential CD4 cell counts and viral load results, complications and co-morbidities, mortality and loss to follow-up up to 96 weeks on ART. Findings: 148 inmates (133 male) initiated on ART were included in the study. By week 96 on ART, 73 % of all inmates enrolled in the study and 92 % of those still accessing care had an undetectable viral load (,400copies/ml). The median CD4 cell count increased from 122 cells/mm 3 at baseline to 356 cells/mm 3 by 96 weeks. By study end, 96 (65%) inmates had ever received tuberculosis (TB) therapy with 63 (43%) receiving therapy during the study: 28 % had a history of TB prior to ART initiation, 33 % were on TB therapy at ART initiation and 22 % developed TB whilst on ART. Nine (6%) inmates died, 7 in the second year on ART. Loss to follow-up (LTF) was common: 14 (9%) patients were LTF whilst still incarcerated, 11 (7%) were LTF post-release and 9 (6%) whose movements could not be traced. 16 (11%) inmates had inter-correctional facility transfers and 34 (23%) were released of whom only 23 (68%) returned to the ART clinic for ongoing follow-up. Conclusions: Inmates responded well to ART, despite a high frequency of TB/HIV co-infection. Attention should be directed towards ensuring eligible prisoners access ART programs promptly and that inter-facility transfers and release procedure

Contrasting predictors of poor antiretroviral therapy outcomes in two South African HIV programmes: a cohort study

BACKGROUND: Many national antiretroviral therapy (ART) programmes encourage providers to identify and address baseline factors associated with poor treatment outcomes, including modifiable adherence-related behaviours, before initiating ART. However, evidence on such predictors is scarce, and providers judgement may often be inaccurate. To help address this evidence gap, this observational cohort study examined baseline factors potentially predictive of poor treatment outcomes in two ART programmes in South Africa, with a particular focus on determinants of adherence. METHODS: Treatment-naïve patients starting ART were enrolled from a community and a workplace ART programme. Potential baseline predictors associated with poor treatment outcomes (defined as viral load > 400 copies/ml or having discontinued treatment by six months) were assessed using logistic regression. Exposure variables were organised for regression analysis using a hierarchical framework. RESULTS: 38/227 (17%) of participants in the community had poor treatment outcomes compared to 47/117 (40%) in the workplace. In the community, predictors of worse outcomes included: drinking more than 20 units of alcohol per week, having no prior experience of chronic medications, and consulting a traditional healer in the past year (adjusted odds ratio [aOR] 15.36, 95% CI 3.22-73.27; aOR 2.30, 95%CI 1.00-5.30; aOR 2.27, 95% CI 1.00-5.19 respectively). Being male and knowing someone on ART were associated with better outcomes (aOR 0.25, 95%CI 0.09-0.74; aOR 0.44, 95%CI 0.19-1.01 respectively). In the workplace, predictors of poor treatment outcomes included being uncertain about the health effects of ART and a traditional healer's ability to treat HIV (aOR 7.53, 95%CI 2.02-27.98; aOR 4.40, 95%CI 1.41-13.75 respectively). Longer pre-ART waiting time (2-12 weeks compared to <2 weeks) predicted better treatment outcomes (aOR 0.13, 95% CI 0.03-0.56). CONCLUSION: Baseline predictors of poor treatment outcomes were largely unique to each programme, likely reflecting different populations and pathways to HIV care. In the workplace, active promotion of HIV testing may have extended ART to individuals who, without provider initiation, would not have spontaneously sought care. As provider-initiated testing makes ART available to individuals less motivated to seek care, patients may need additional adherence support, especially addressing uncertainty about the health benefits of ART

Pharmacological treatment of painful HIV-associated sensory neuropathy

Background. HIV-associated sensory neuropathy (HIV-SN) is a common and frequently painful complication of HIV infection and its treatment. However, few data exist describing the frequency, type and dosage of pain medications patients are receiving in the clinic setting to manage the painful symptoms of HIV-SN.Objective. To report on analgesic prescription for painful HIV-SN and factors influencing that prescription in adults on combination antiretroviral therapy. Methods. Using validated case ascertainment criteria to identify patients with painful HIV-SN, we recruited 130 HIV-positive patients with painful HIV-SN at Chris Hani Baragwanath Hospital, Johannesburg, South Africa. Demographic and clinical data (including current analgesic use) were collected on direct questioning of the patients and review of the medical files.Results. We found significant associations, of moderate effect size, between higher pain intensity and lower CD4 T-cell counts with prescription of analgesic therapy. Factors previously identified as predicting analgesic treatment in HIV-positive individuals (age, gender, level of education) were not associated with analgesic use here. Consistent with national guidelines, amitriptyline was the most commonly used agent, either alone or in combination therapy. Importantly, we also found that despite the relatively high analgesic treatment rate in this setting, the majority of patients described their current level of HIV-SN pain as moderate or severe. Conclusion. Our findings highlight the urgent need for both better analgesic options for HIV-SN pain treatment and ongoing training and support of clinicians managing this common and debilitating condition.