Impact of HIV-1 infection in South Africa

The impact of HIV-associated anaemia on the incidence of red blood cell transfusion: implications for blood services in HIV-endemic countries

Cytopaenias, especially anaemia, are common in the HIV-infected population. The causes of HIV related cytopaenias are multi-factorial and often overlapping. In addition, many of the drugs used in the management of HIV-positive individuals are myelosuppresive and can both cause and exacerbate anaemia. Even though blood and blood products are still the cornerstone in the management of severe cytopaenias, how HIV may affect blood utilisation is not well understood. The impact of HIV/AIDS on blood collections has been well documented. As the threat posed by HIV on the safety of the blood supply became clearer, South Africa introduced progressively more stringent donor selection criteria, based on the HIV risk profile of the donor cohort from which the blood collected. The implementation of new testing technology in 2008 which significantly improved the safety of the blood supply enabled the removal of what was perceived by many as a racially based donor risk model. However, this new technology had a significant and sustained impact on the cost of blood and blood products in South Africa. In contrast, it would appear little is known of how HIV influences the utilisation of blood and blood products. Considering the high prevalence of HIV among hospitalised patients and the significant risk for anaemia among this group, there would be an expectation that the transfusion requirements of an HIV-infected patient would be higher than that of an HIV-negative patient. However, very little published data is available on this topic which emphasises the need for further large-scale studies to evaluate the impact of HIV/AIDS on the utilisation of blood and blood products and how the large-scale roll-out of ARV programs may in future play a role in determining the country's blood needs.

Evaluation of a Brief Intervention to Improve the Nursing Care of Young Children in a High HIV and AIDS Setting

The HIV epidemic in South Africa is putting great strain on health services, including the inpatient care of young children. Caregivers and young children (107 pairs) and 17 nurses participated in an intervention to improve the care of young children in hospital in a high HIV and AIDS setting. The intervention addressed caregiver expectations about admission and treatment, responsive feeding, coping with infant pain and distress, assistance with medical procedures, and preparation for discharge and home care. Following a preparatory and piloting phase, measures of nurse burnout, caregiver physical and emotional well-being, and caregiver-child interaction were made before and after intervention. No changes were found between before and after intervention on assessments of caregiver wellbeing. However, mothers in the postintervention phase rated nurses as more supportive; mother-child interaction during feeding was more relaxed and engaged, and babies were less socially withdrawn. While the intervention proved useful in improving certain outcomes for children and their caregivers, it did not address challenging hospital and ward administration or support needed by caregivers at home following discharge. To address the latter need, the intervention has been extended into the community through home-based palliative care and support.

Infectious causes of seizures and epilepsy in the developing world

Central nervous system (CNS) infections are the main cause of seizures and acquired epilepsy in the developing world. Geographical variations determine the common causes in a particular region. Acute seizures are common in severe meningitis, viral encephalitis, malaria, and neurocysticercosis, and in most cases are associated with increased mortality and morbidity, including subsequent epilepsy. Neuronal excitability secondary to proinflammatory signals induced by CNS infections are an important common mechanism for the generation of seizures, in addition to various other specific mechanisms. Newer insights into the neurobiology of these infections and the associated epilepsy could help in developing neuroprotective interventions. Management issues include prompt treatment of acute seizures and the underlying CNS infection, correction of associated predisposing factors, and decisions regarding the appropriate choice and duration of antiepileptic therapy. Strategies for the prevention of epilepsy in CNS infections such as early anti-infective and anti-inflammatory therapy need scientific exploration. Prevention of CNS infections is the only definitive way forward to reduce the burden of epilepsy in developing countries.

Duration of hospitalization and appetite of HIV-infected South African children

Human immunodeficiency virus (HIV)-infected children generally show poor growth. Episodes of diarrhoea and pneumonia in HIV-infected children are thought to be more severe than in HIV-uninfected children. The objective of this study was to compare duration of hospitalization, appetite and nutritional status of HIV-infected children with that of uninfected children. A cross-sectional study was performed on children (2-24 months) admitted with diarrhoea or pneumonia to the university hospital. Children were tested for HIV, and the duration of hospitalization was noted for 189 children. Follow-up for blood analysis (n=154) and appetite measurement (n=48) was performed 4-8 weeks after discharge. Appetite was measured as ad libitum intake of a commercial infant cereal using highly standardized procedures. Hospitalization (in days) was significantly longer in HIV-infected children; among children admitted with diarrhoea (5.9 ± 1.9 vs. 3.8 ± 1.5) (mean ± standard deviation) and with pneumonia (9.0 ± 2.5 vs. 5.9 ± 1.9). Serum zinc, iron and transferrin concentrations, and haemoglobin levels were significantly lower in HIV-infected children compared with uninfected children. Appetites [amounts eaten (g) per kg body weight] of HIV-infected children were significantly poorer than those of HIV-uninfected children (18.6 ± 5.8 vs. 25.2 ± 7.4). The eating rates (g min(-1) ) of HIV-infected children were also slower (17.6 ± 6.2 vs. 10.1 ± 3.7) Mean Z-scores for length-for-age were significantly lower among HIV-infected children compared with HIV-uninfected children. Weight-for-length Z-scores were not significantly different. In summary, HIV-infected children had a 55% longer duration of hospitalization and a 21% lower appetite.

Improving hospital care for young children in the context of HIV/AIDS and poverty

Paediatric wards in South African government hospitals are occupied predominantly by children with HIV and AIDS-related illnesses. Although access to anti-retroviral treatment for adults is being scaled up, it is likely to be many years before South Africa achieves anywhere near universal access for children. Currently, most children living with HIV or AIDS are identified only when they become acutely or chronically ill and/or hospitalized, if at all. In the absence of treatment, the stress of caring for ill and hospitalized HIV-positive children often results in emotional withdrawal among both health professionals and caregivers. The demoralizing cycle of repeated admissions, treatment failure and death also affect the quality of the care given to HIV-negative children in over-burdened wards. This article describes the development of simple, low-cost and context-relevant interventions to improve the care environment for young hospitalized children within the context of the HIV/AIDS epidemic and poverty.

Increase in clinical prevalence of AIDS implies increase in unsafe medical injections

A mass action model developed by the World Health Organization (WHO) estimates that the re-use of contaminated syringes for medical care accounted for 2.5% of HIV infections in sub-Saharan Africa in 2000. The WHO's model applies the population prevalence of HIV infection rather than the clinical prevalence to calculate patients' frequency of exposure to contaminated injections. This approach underestimates iatrogenic exposure risks when progression to advanced HIV disease is widespread. This sensitivity analysis applies the clinical prevalence of HIV to the model and re-evaluates the transmission efficiency of HIV in injections. These adjustments show that no less than 12-17%, and up to 34-47%, of new HIV infections in sub-Saharan Africa may be attributed to medical injections. The present estimates undermine persistent claims that injection safety improvements would have only a minor impact on HIV incidence in Africa.

Caring for the caregivers: models of HIV/AIDS care and treatment provision for health care workers in Southern Africa

Rollout of antiretroviral therapy (ART) has been successfully initiated in many countries, but concerns have been raised about the ability to meet treatment needs in areas where there is a high prevalence of human immunodeficiency virus (HIV) infection/acquired immunodeficiency syndrome (AIDS) and where there are severe deficits in human-resource capacity. Many health care workers in resource-poor areas are experiencing burnout, struggling with external and internal stigma, failing to access HIV testing and treatment early, and subsequently becoming sick and dying of AIDS. Although the human-resource deficit is a well-recognized problem, little has been written about the programs that have been established to provide treatment for HIV-infected health care workers. In the present article, we describe staff care programs at McCord Hospital in Durban, South Africa; Mseleni Hospital in northern KwaZulu-Natal, South Africa; and the Tshedisa Institute in Gaborone, Botswana. These programs provide convenient, confidential, and holistic care for HIV-infected health care workers and health care workers affected by caring for HIV-infected patients. All 3 programs have noted that, among health care workers, there is increasing acceptance of counseling, testing, and treatment. We propose that there is an urgent need for the development of HIV/AIDS care and treatment programs for health care workers that remove barriers to access, provide confidentiality in testing, are conveniently located, and are integrated with tuberculosis programs and other treatment services.

The effect of nutritional support on weight gain of HIV-infected children with prolonged diarrhoea

AIM

To examine the effect on growth and immunity of enhanced calorie and protein provision to HIV-infected children presenting with prolonged diarrhoea.

METHODS

A total of 169 HIV-infected children aged 6-36 months with diarrhoea for 7 days or more were randomly assigned to either standard nutrition support for children with prolonged diarrhoea or an enhanced diet started during hospitalisation and continued after discharge. The change in weight between enrolment and 8, 14 and 26 weeks and changes in plasma HIV-RNA and CD4 cell count at 8 and 26 weeks were estimated.

RESULTS

Children receiving enhanced nutrition achieved significantly more weight gain (p < 0.001) between enrolment and 8 weeks than children on the standard diet (median increase in weight-for-age standard deviation score +1.02 vs. +0.01). After 8 weeks median weight velocity was normal and similar in both groups. The change in median CD4 count was similar in both groups. The 26-week mortality rate was high in both groups (standard support: 22%, enhanced support: 29%).

CONCLUSIONS

Nutrition support of children with advanced HIV infection and prolonged diarrhoea resulted in significant and sustained weight gain, but did not improve CD4 counts or survival. These results support integrated nutrition interventions for HIV-infected children.

Pediatric Nursing in the Context of the HIV/AIDS Epidemic in Resource-poor Settings—Balancing the “Art and the Science”

Pediatric wards in South Africa are largely occupied by children with AIDS-related illnesses. This study uses qualitative inquiry involving focus groups with nurses into the needs of children, caregivers, and healthcare providers. The findings indicate changes to the nature of nursing practice, knowledge of nursing, and ethics of nursing care.

Specific neurologic complications of human immunodeficiency virus type 1 (HIV-1) infection in children

Pediatric human immunodeficiency virus type 1 (HIV-1) infection is endemic throughout southern Africa. Neurologic complications are described in 20% to 60% of published series, mostly related to HIV-1 encephalopathy. With increasing HIV prevalence, more atypical cases are presenting. We present, as illustrative cases, seven children (three girls) with unusual neurologic sequelae as a consequence of HIV-1 infection. The median age at presentation was 33 months (range 7 months-6 years). Five of the seven children were developmentally normal before presentation. They presented with progressive multifocal leukoencephalopathy, myelopathy, intractable seizures, acute vasculitis and blindness, hemiplegia, peripheral neuropathy, and paraspinal lymphoma. Neuroimaging of the brain was performed in five patients, of whom one had basal ganglia calcification. All children had poor outcome with incomplete recovery or continued deterioration. In conclusion, children with HIV-1 infection who survive beyond the first year of life can present with a wide variety of neurologic complications. A similar spectrum of neurologic manifestations is likely to occur in other sub-Saharan African countries, characterized by high HIV prevalence. The case histories demonstrate that the neurologic features of pediatric HIV infection do not easily fit into a simplified classification system.

The burden of HIV-related illness on outpatient health services in KwaZulu-Natal, South Africa

Health services in sub-Saharan Africa will be faced with increasing numbers of AIDS patients for many years to come. Where there is good availability of drugs and other resources, the costs of treating HIV/AIDS is likely to be higher than those of treating other types of illness. This will put services under strain and potentially jeopardise health system reform, depending on the vulnerability of the system. Whereas previous research has focussed on inpatients, this paper looks at the impact of HIV/AIDS on outpatient services in a district of South Africa. Through facility visits at various levels of care, data concerning HIV status and the costs of care was collected for all patients presenting over a set period of time. The proportion of patients presenting for HIV-related care ranged from 20.2 to 24.5%. The average costs of treating HIV-positive patients were significantly higher than those for non HIV patients at hospitals, with clinics not experiencing this difference due to the limited service provided. District hospitals spent the greatest proportion of direct patient care resources on treating HIV-related illness. In terms of outpatient care, this data suggests that district hospitals may require the most support in dealing with a rising number of AIDS patients.

Sepsis predisposition in children with human immunodeficiency virus

OBJECTIVE

To review predisposition to sepsis in children infected with human immunodeficiency virus (HIV) in the era of highly active antiretroviral therapy (HAART).

DESIGN

Summary of the literature with review by experts in the field.

RESULTS

In industrialized regions, new diagnoses of vertically acquired HIV infection are falling due to perinatal interventions. Provision of HAART has resulted in an enlarging cohort of clinically stable HIV-infected children, with low viral loads and normal CD4 T-lymphocyte counts. Access to HAART in "developed" countries has markedly decreased the rate of progression to acquired immunodeficiency syndrome, the prevalence of organ-specific complications of HIV, the risk of recurrent sepsis, and the high early childhood mortality from HIV infection. There are currently no data on whether initiation of HAART during acute sepsis reduces short-term morbidity or mortality. Undiagnosed, antiretroviral-naive, HIV-infected infants still present sporadically with opportunistic infections such as Pneumocystis jiroveci and cytomegalovirus pneumonia. HIV-infected children have a greater burden of disease due to viral, bacterial, and fungal sepsis, and the case fatality rate for nonopportunistic infections may be greater than in non-HIV-infected children. In "developing" countries, with limited access to HAART, the natural history of HIV infection has altered very little, with the majority of infected children dying from either opportunistic or nonopportunistic disease before 3 yrs of age.

CONCLUSION

Pediatric HIV infection is not a homogeneous condition in the era of HAART. Susceptibility to sepsis, morbidity, and mortality differ according to stage of disease, access to HAART, and virologic and immunologic response to treatment. These issues should be considered if HIV-infected children are to be enrolled and stratified in clinical trials.

Challenges in the provision of ICU services to HIV infected children in resource poor settings: a South African case study

The HIV/AIDS epidemic has placed increasing demands on limited paediatric intensive care services in developing countries. The decision to admit HIV infected children with Pneumocystis carinii pneumonia (PCP) into the paediatric intensive care unit (PICU) has to be made on the best available evidence of outcome and the ethical principles guiding appropriate use of scarce resources. The difficulty in confirming the diagnosis of HIV infection and PCP in infancy, issues around HIV counselling, and the variance in the outcome of HIV infected children with PCP admitted to the PICU in African studies compound this process. Pragmatic decision making will require evaluation of at least three ethical questions: are there clinical and moral reasons for admitting HIV positive children with PCP to the PICU, should more resources be committed to caring for HIV children who require the PICU, and how can we morally choose candidates for the PICU? Those working in the PICU in HIV endemic regions need to make difficult personal decisions on effective triage of admissions of HIV infected children with PCP based on individual case presentation, availability of resources, and applicable ethical principles.

Maternal perceptions of acute respiratory infections in children under 5 in rural South Africa

OBJECTIVES

To assess maternal ability to recognize respiratory distress and to identify local beliefs and practices around respiratory infections in rural KwaZulu/Natal, South Africa.

METHODS

A descriptive study: 15 knowledgeable mothers were shown a video of 10 children with respiratory distress and four normal children. Mothers were asked to describe perceived types, signs, symptoms, causes of and actions taken for each child. Sensitivity and specificity were calculated for maternal recognition of respiratory distress (chest indrawing, fast breathing) shown on the video. A focus group discussion with six mothers was held to corroborate and refine individually reported local concepts.

FINDINGS

Maternal recognition of respiratory distress was good (sensitivity 91.3%, 95% CI: 86.8-95.8%; specificity 95%, 95%CI: 89.5-100%), with little variation between mothers (kappa = 0.704). Mothers described 12 'local types of respiratory illness', each with its own name and its own well-defined set of signs and symptoms. They were classifiable into five causative categories: supernatural, natural, tuberculosis, cold weather and unknown, indicating that perceptions of causation differed greatly from biomedical concepts. For illnesses of perceived supernatural causation, mothers were reluctant to seek medical care and antibiotics were deemed inappropriate. Traditional remedies were preferred instead.

CONCLUSION

Knowledge of local vocabulary and concepts about respiratory infections is essential to design strategies for health care workers to communicate with mothers about respiratory disease, so that mothers will seek timely medical care, provide continued safe, supportive home care and comply with antibiotic treatment.

Lung diseases at necropsy in African children dying from respiratory illnesses: a descriptive necropsy study

BACKGROUND

Accurate information about specific causes of death in African children dying of respiratory illnesses is scarce, and can only be obtained by autopsy. We undertook a study of children who died from respiratory diseases at University Teaching Hospital, Lusaka, Zambia.

METHODS

137 boys (93 HIV-1-positive, 44 HIV-1-negative], and 127 girls (87 HIV-1-positive, 40 HIV-1-negative) aged between 1 month and younger than 16 years underwent autopsy restricted to the chest cavity. Outcome measures were specific lung diseases, stratified by age and HIV-1 status.

FINDINGS

The presence of multiple diseases was common. Acute pyogenic pneumonia (population-adjusted prevalence 39.1%, 116/264), Pneumocystis carinii pneumonia (27.5%, 58/264), tuberculosis (18.8%, 54/264), and cytomegalovirus infection (CMV, 20.2%, 43/264) were the four most common findings overall. The three most frequent findings in the HIV-1-negative group were acute pyogenic pneumonia (50%), tuberculosis (26%), and interstitial pneumonitis (18%); and in the HIV-1-positive group were acute pyogenic pneumonia (41%), P carinii pneumonia (29%), and CMV (22%). HIV-1-positive children more frequently had P carinii pneumonia (odds ratio 5.28, 95% CI 2.12-15.68, p=0.0001), CMV (7.71, 2.33-40.0, p=0.0002), and shock lung (4.15, 1.20-22.10, p=0.03) than did HIV-1-negative children. 51/58 (88%) cases of P carinii pneumonia were in children younger than 12 months, and five in children aged over 24 months. Tuberculosis was common in all age groups, irrespective of HIV-1 status.

INTERPRETATION

Most children dying from respiratory diseases have preventable or treatable infectious illnesses. The presence of multiple diseases might make diagnosis difficult. WHO recommendations should therefore be updated with mention of HIV-1-positive children. Improved diagnostic tests for bacterial pathogens, tuberculosis, and P carinii pneumonia are urgently needed.