Isaac F. Adewole

Disclosure of HIV status to infected children in a Nigerian HIV Care Programme

With increasing survival of HIV-infected children, parents face the challenges of disclosure to the children. The aim of this study was to assess the rate of HIV disclosure to children in Ibadan and the factors influencing it in order to guide design of strategies for successful disclosure. A semi-structured questionnaire was administered to consecutive consenting caregivers of HIV-infected children aged ≥6 years attending the Paediatric Infectious Disease Clinic of the University College Hospital, Ibadan, between November 2008 and October 2009. Caregivers of 96 children (46 boys, 50 girls) infected with HIV were interviewed. The ages of the children ranged from 6 to 14 years with a mean (SD) of 8.8 (2.2) years. Disclosure had been done in only 13 (13.5%) of the children; ages at disclosure ranged from 4.5 to 13 years with a mean of 8.7 (SD = 2.2). Disclosure was associated with age above 10 years. Reasons given by carers for non-disclosure in 83 caregivers included inability of the children to understand in 53 (63.9%), fear of disclosure to other children 34 (41.0%), fear of disclosure to family/friends in 28 (33.7%), fear of psychological disturbance of the children in 26 (31.3%) and fear of blaming the parents in 22 (26.5%). Twenty (20.8%) of the children have asked questions relating to their diagnosis and the responses are often evasive. Caregivers felt disclosure had helped adherence to antiretroviral therapy in 7 (63.6%) of the 11 children on antiretroviral drugs in whom there was disclosure but no effect on the remaining. There is a need to assist parents and health care providers in successfully disclosing HIV status to infected children without adverse consequences.

Abdominal ultrasonography in HIV/AIDS patients in southwestern Nigeria

BackgroundThough the major target of the HIV-virus is the immune system, the frequency of abdominal disorders in HIV/AIDS patients has been reported to be second only to pulmonary disease. These abdominal manifestations may be on the increase as the use of antiretroviral therapy has increased life expectancy and improved quality of life. Ultrasonography is an easy to perform, non invasive, inexpensive and safe imaging technique that is invaluable in Africa where AIDS is most prevalent and where sophisticated diagnostic tools are not readily available. Purpose: To describe the findings and evaluate the clinical utility of abdominal ultrasonography in HIV/AIDS patients in Ibadan, NigeriaMethodsA Prospective evaluation of the abdominal ultrasonography of 391 HIV-positive patients as well as 391 age and sex-matched HIV-negative patients were carried out at the University College Hospital, Ibadan.ResultsOf the 391 cases studied, 260 (66.5%) were females; the mean age was 38.02 years, (range 15–66 years). The disease was most prevalent in the 4th decade with an incidence of 40.4%. Compared with the HIV-negative individuals, the HIV+ group of patients had a significantly higher proportion of splenomegaly (13.5% vs. 7.7%; p < 0.01), lymphadenopathy (2.0% vs. 1.3%; p < 0.70), and renal abnormalities (8.4% vs. 3.8%; p < 0.02). There were no differences in hepatic and pancreatic abnormalities between the HIV+ and HIV- groups. There were significantly fewer gallstones in the HIV+ group (1.4% vs. 5.1%; p < 0.01).ConclusionAIDS is a multi-systemic disease and its demographic and clinical pattern remains the same globally. Ultrasonography is optimally suited for its clinical management especially in Africa. Its accuracy and sensitivity may be much improved with clinico-pathologic correlation which may not be readily available in developing countries; further studies may provide this much needed diagnostic algorithms.

Modeling optimal cervical cancer prevention strategies in Nigeria

BackgroundThis study aims to assess the most efficient combinations of vaccination and screening coverage for the prevention of cervical cancer (CC) at different levels of expenditure in Nigeria.MethodsAn optimization procedure, using a linear programming approach and requiring the use of two models (an evaluation and an optimization model), was developed. The evaluation model, a Markov model, estimated the annual number of CC cases at steady state in a population of 100,000 women for four alternative strategies: screening only; vaccination only; screening and vaccination; and no prevention. The results of the Markov model for each scenario were used as inputs to the optimization model determining the optimal proportion of the population to receive screening and/or vaccination under different scenarios. The scenarios varied by available budget, maximum screening and vaccination coverage, and overall reachable population.ResultsIn the base-case optimization model analyses, with a coverage constraint of 20% for one lifetime screening, 95% for vaccination and a budget constraint of

Mycobacterium tuberculosis and Mycobacterium africanum in stools from children attending an immunization clinic in Ibadan, Nigeria.

1 per woman per year to minimize CC incidence, the optimal mix of prevention strategies would result in a reduction of CC incidence of 31% (3-dose vaccination available) or 46% (2-dose vaccination available) compared with CC incidence pre-vaccination. With a 3-dose vaccination schedule, the optimal combination of the different strategies across the population would be 20% screening alone, 39% vaccination alone and 41% with no prevention, while with a 2-dose vaccination schedule the optimal combination would be 71% vaccination alone, and 29% with no prevention. Sensitivity analyses indicated that the results are sensitive to the constraints included in the optimization model as well as the cervical intraepithelial neoplasia (CIN) and CC treatment cost.ConclusionsThe results of the optimization model indicate that, in Nigeria, the most efficient allocation of a limited budget would be to invest in both vaccination and screening with a 3-dose vaccination schedule, and in vaccination alone before implementing a screening program with a 2-dose vaccination schedule.

Attitudes of women and men living with HIV and their healthcare providers towards pregnancy and abortion by HIV-positive women in Nigeria and Zambia

BACKGROUND Tuberculosis is a major cause of childhood morbidity and mortality in Nigeria. Diagnosis of childhood tuberculosis is a global challenge making early treatment a mirage. In this study we investigated the stools of children for the presence of mycobacteria. METHODS Stool samples from children aged 3 days to 3 years who presented for postnatal immunization at a large university-based clinic in Nigeria, were subjected to Ziehl-Neelsen staining. Samples with acid-fast bacilli were further processed using mycobacterial culture, spoligotyping, and deletion typing. RESULTS One hundred and ninety-two stool samples from different children were collected and processed. Thirty (15.6%) had acid-fast bacilli. Of these, eight had Mycobacterium tuberculosis and one had Mycobacterium africanum. CONCLUSIONS Approximately 5% (9/192) of apparently well children had evidence of potentially serious tuberculosis infection. The usefulness of stool specimens for diagnosing pediatric tuberculosis warrants further investigation.

Nontuberculous Mycobacteria Isolated from Tuberculosis Suspects in Ibadan, Nigeria.

Fertility decisions among people living with HIV/AIDS (PLWHA) are complicated by disease progression, the health of their existing children and possible antiretroviral therapy (ART) use, among other factors. Using a sample of HIV-positive women (n = 353) and men (n = 299) from Nigeria and Zambia and their healthcare providers (n = 179), we examined attitudes towards childbearing and abortion by HIV-positive women. To measure childbearing and abortion attitudes, we used individual indicators and a composite measure (an index). Support for an HIV-positive woman to have a child was greatest if she was nulliparous or if her desire to have a child was not conditioned on parity and lowest if she already had an HIV-positive child. Such support was found to be lower among HIV-positive women than among HIV-positive men, both of which were lower than reported support from their healthcare providers. There was wider variation in support for abortion depending on the measure than there was for support for childbearing. Half of all respondents indicated no or low support for abortion on the index measure while between 2 and 4 in 10 respondents were supportive of HIV-positive women being able to terminate a pregnancy. The overall low levels of support for abortion indicate that most respondents did not see HIV as a medical condition which justifies abortion. Respondents in Nigeria and those who live in urban areas were more likely to support HIV-positive womens childbearing. About a fifth of HIV-positive respondents reported being counselled to end childbearing after their diagnosis. In summary, respondents from both Nigeria and Zambia demonstrate tempered support of (continued) childbearing among HIV-positive women while anti-abortion attitudes remain strong. Access to ART did not impart a strong effect on these attitudes. Therefore, pronatalist attitudes remain in place in the face of HIV infection.

Willingness of reproductive-aged women in a Nigerian community to accept human papillomavirus vaccination for their children

In Nigeria, one of the highest tuberculosis (TB) burdened nations, sputum smear microscopy is routinely employed for TB diagnosis at Directly Observed Treatment Short-Course (DOTS) Centers. This diagnostic algorithm does not differentiate Mycobacterium tuberculosis complex (MTC) from nontuberculous mycobacteria (NTM). Between December 2008 and January 2009, consecutive patients diagnosed with TB were screened for inclusion at 10 DOTS centers in Ibadan, Nigeria. To verify Mycobacterium species in patients diagnosed, we cultured and identified mycobacterial isolates using PCR, line probe assay, and spoligotyping techniques. From 48 patients screened, 23 met the inclusion criteria for the study. All the 23 study patients had a positive culture. Overall, we identified 11/23 patients (48%) with MTC only, 9/23 (39%) with NTM only, and 3/23 (13%) with evidence of both MTC and NTM. Strains of MTC identified were Latin American Mediterranean (LAM) genotype (n = 12), M. africanum (n = 1), and the genotype family T (n = 1). Four M. avium-intracellulare-M. scrofulaceum complexes, one M. chelonae complex, one M. abscessus, and one M. intracellulare were identified. Our findings underscore the need to incorporate molecular techniques for more precise diagnosis of TB at DOTS centers to improve clinical outcomes and safe guard public health, particularly in TB endemic countries.

Mobile phone use for a social strategy to improve antiretroviral refill experience at a low-resource HIV clinic: patient responses from Nigeria

The aim of this study was to determine the willingness of reproductive‐aged women in a Nigerian community to allow human papillomavirus (HPV) vaccination in their children and the associated factors with this decision.

Condom use among antiretroviral therapy patients in Ibadan Nigeria.

ABSTRACT In sub-Saharan African areas where antiretroviral (ARV) drugs are not available through community pharmacies, clinic-based pharmacies are often the primary source of ARV drug refills. Social pressure is mounting on treatment providers to adjust ARV refill services towards user-friendly approaches which prioritize patients’ convenience and engage their resourcefulness. By this demand, patients may be signalling dissatisfaction with the current provider-led model of monthly visits to facility-based pharmacies for ARV refill. Mobile phones are increasingly popular in sub-Saharan Africa, and have been used to support ARV treatment goals in this setting. A patient-centred response to on-going social pressure requires treatment providers to view ARV refill activities through the eyes of patients who are negotiating the challenges of day-to-day life while contemplating their next refill appointment. Using focus groups of five categories of adult patients receiving combination ARV therapy, we conducted this cross-sectional qualitative study to provide insight into modifiable gaps between patients’ expectations and experiences of the use of mobile phones in facility-based ARV refill service at a public HIV clinic in Nigeria. A notable finding was patients’ preference for harnessing informal social support (through intermediaries with mobile phones) to maintain adherence to ARV refill appointments when they could not present in person. This evolving social support strategy also has the potential to enhance defaulter tracking. Our study findings may inform the development of ARV refill strategies and the design of future qualitative studies on client–provider communication by mobile phones in under-resourced HIV treatment programmes.