Cohort profile: the Nigerian HIV geriatric cohort study

Background: The Nigerian HIV Geriatric Cohort (NHGC) is a longitudinal cohort setup to learn how elderly people living with HIV (EPLHIV) in Nigeria fare, despite not being prioritized by the national treatment program, and to deepen knowledge for their differentiated care and achieve better outcomes. In this paper, we describe data collected on sociodemographic and clinical data from EPLHIV from the inception of Nigeria’s national HIV program to 2018. Methods: Patient-level data spanning the period 2004 to 2018, obtained from comprehensive HIV treatment hospitals, that are supported by four major PEPFAR-implementing partners in Nigeria were used. These 4 entities collaborated as member organizations of the Nigeria Implementation Science Alliance. We defined elderly as those aged 50 years and above. From deidentified treatment records, demographic and clinical data of EPLHIV ≥50-year-old at ART initiation during the review period was extracted, merged into a single REDcap® database, and described using STATA 13. Results: A total of 101,652 EPLHIV were analysed. Women accounted for 53,608 (53%), 51,037 (71%) of EPLHIV identified as married and 33,446 (51%) unemployed. Median age was 57.1 years (IQR 52–60 years) with a median duration on ART treatment of 4.1 years (IQR 1.7–7.1 years). ART profile showed that 97,586 (96%) were on 1st-line and 66,125 (65%) were on TDF-based regimens. Median body mass index (BMI) was 22.2 kg/m2 (IQR 19.5–25.4 kg/m2) with 43,012 (55%), 15,081 (19%) and 6803 (9%) showing normal (BMI 18.5 – 140 mmHg or diastolic-BP > 90 mmHg) was 16,201 (21%). EPLHIV median CD4 count was 381 cells/μL (IQR 212–577 cells/μL) and 26,687 (82%) had a viral load result showing < 1000copies/ml within one year of their last visit. As for outcomes at their last visit, 62,821 (62%) were on active-in-treatment, 28,463 (28%) were lost-to-follow-up, 6912 (7%) died and 2456 (3%) had stopped or transferred out. Poor population death records and aversion to autopsies makes it almost impossible to estimate AIDS-related deaths. Conclusions: This cohort describes the clinical and non-clinical profile of EPLHIV in Nigeria. We are following up the cohort to design and implement intervention programs, develop prognostic models to achieve better care outcomes for EPLHIV. This cohort would provide vital information for stakeholders in HIV prevention, care and treatment to understand the characteristics of EPLHIV

Modelling the impact and cost-effectiveness of combination prevention amongst HIV serodiscordant couples in Nigeria

Objective: To estimate the impact and cost-effectiveness of treatment as prevention (TasP), pre-exposure prophylaxis (PrEP) and condom promotion for serodiscordant couples in Nigeria. / Design: Mathematical and cost modelling. / Methods: A deterministic model of HIV-1 transmission within a cohort of serodiscordant couples and to/from external partners was parameterized using data from Nigeria and other African settings. The impact and cost-effectiveness were estimated for condom promotion, PrEP and/or TasP, compared with a baseline where antiretroviral therapy (ART) was offered according to 2010 national guidelines (CD4+ <350 cells/μl) to all HIV-positive partners. The impact was additionally compared with a baseline of current ART coverage (35% of those with CD4+ <350 cells/μl). Full costs (in US $2012) of programme introduction and implementation were estimated from a provider perspective. / Results: Substantial benefits came from scaling up ART to all HIV-positive partners according to 2010 national guidelines, with additional smaller benefits of providing TasP, PrEP or condom promotion. Compared with a baseline of offering ART to all HIV-positive partners at the 2010 national guidelines, condom promotion was the most cost-effective strategy [US$1206/disability-adjusted-life-year (DALY)], the next most cost-effective intervention was to additionally give TasP to HIV-positive partners (incremental cost-effectiveness ratio US $1607/DALY), followed by additionally giving PrEP to HIV-negative partners until their HIV-positive partners initiate ART (US$7870/DALY). When impact was measured in terms of infections averted, PrEP with condom promotion prevented double the number of infections as condom promotion alone. / Conclusions: The first priority intervention for serodiscordant couples in Nigeria should be scaled up ART access for HIV-positive partners. Subsequent incremental benefits are greatest with condom promotion and TasP, followed by PrEP

Track E Implementation Science, Health Systems and Economics

Peer Reviewedhttps://deepblue.lib.umich.edu/bitstream/2027.42/138412/1/jia218443.pd

Same-day smears in the diagnosis of tuberculosis

OBJECTIVE: To assess the feasibility of completing the diagnosis of tuberculosis (TB) in 1 day by collecting only on-the-spot specimens.METHODS: Individuals with suspected TB attending district hospitals in Abuja submitted three sputum samples for routine diagnosis (the standard approach). One additional sample was collected 1 h after the first sputum (the same-day approach). One sputum sample was cultured. Blood samples were tested for HIV.RESULTS: Two hundred and twenty-four patients with chronic cough had 135/672 (20%) positive on-the-spot smears and 47/224 (21%) positive morning smears. The same-day and internationally recommended approaches identified 44 and 45 of the 78 patients with positive cultures, respectively. 106/194 (55%) patients were HIV positive. Only 9-11% of their smears were positive compared with 30-32% for HIV negatives (P &lt; 0.01).CONCLUSION: It could be possible to diagnose TB in a single day by examining two spot specimens, but the feasibility needs to be confirmed on a larger scale.</p

Same-day smears in the diagnosis of tuberculosis

OBJECTIVE To assess the feasibility of completing the diagnosis of tuberculosis (TB) in 1 day by collecting only on-the-spot specimens. METHODS Individuals with suspected TB attending district hospitals in Abuja submitted three sputum samples for routine diagnosis (the standard approach). One additional sample was collected 1 h after the first sputum (the same-day approach). One sputum sample was cultured. Blood samples were tested for HIV. RESULTS Two hundred and twenty-four patients with chronic cough had 135/672 (20%) positive on-the-spot smears and 47/224 (21%) positive morning smears. The same-day and internationally recommended approaches identified 44 and 45 of the 78 patients with positive cultures, respectively. 106/194 (55%) patients were HIV positive. Only 9-11% of their smears were positive compared with 30-32% for HIV negatives (P < 0.01). CONCLUSON It could be possible to diagnose TB in a single day by examining two spot specimens, but the feasibility needs to be confirmed on a larger scale

Effects of Index Client and Geo-targeting on HIV Case Identification: An Observational Study

Background Despite huge investments in HIV prevention, treatment, and care in sub-Saharan Africa, fewer than one in 10 individuals knows their HIV status, and 40% of individuals living with HIV are not cognisant of their positive status. Efforts to improve and strengthen HIV service delivery, particularly in HIV testing, are necessary to increase efficiency in HIV case finding and optimise service delivery. Standard approaches to HIV testing have not been effective in addressing this gap. Our objective was to evaluate a targeted approach for HIV case identification in a PEPFAR-supported HIV programme in Nigeria. Methods Between October, 2016, and June, 2017, we implemented a strategy that included index client testing, geo-targeted HIV testing, and provider-initiated counselling and testing in 14 local government areas in Akwa Ibom, southern Nigeria. The tests were administered in conjunction with the conventional method of testing and were in line with the PEPFAR impact agenda. We estimated the number of individuals who needed to be tested by each method in order to meet a benchmark of 8000 new diagnoses per quarter. We described dispersion using median and IQR. Findings Conventional methods in the 14 local government areas required testing of 600 000 individuals (median 50 000 [IQR 741 000]) whereas using our targeted approach, we met 60% of the benchmark in each quarter by testing 214 000 individuals on average (median 14 000 [IQR 12 000]). Interpretation We demonstrated that use of a targeted approach to HIV testing can increase the efficiency of case identification. This process can therefore help increase early initiation of treatment and retention of subjects diagnosed with HIV. Funding PEPFAR

Effects of index client and geo-targeting on HIV case identification: an observational study

Background: Despite huge investments in HIV prevention, treatment, and care in sub-Saharan Africa, fewer than one in 10 individuals knows their HIV status, and 40% of individuals living with HIV are not cognisant of their positive status. Efforts to improve and strengthen HIV service delivery, particularly in HIV testing, are necessary to increase efficiency in HIV case finding and optimise service delivery. Standard approaches to HIV testing have not been effective in addressing this gap. Our objective was to evaluate a targeted approach for HIV case identification in a PEPFAR-supported HIV programme in Nigeria. Methods: Between October, 2016, and June, 2017, we implemented a strategy that included index client testing, geo-targeted HIV testing, and provider-initiated counselling and testing in 14 local government areas in Akwa Ibom, southern Nigeria. The tests were administered in conjunction with the conventional method of testing and were in line with the PEPFAR impact agenda. We estimated the number of individuals who needed to be tested by each method in order to meet a benchmark of 8000 new diagnoses per quarter. We described dispersion using median and IQR. Findings: Conventional methods in the 14 local government areas required testing of 600 000 individuals (median 50 000 [IQR 741 000]) whereas using our targeted approach, we met 60% of the benchmark in each quarter by testing 214 000 individuals on average (median 14 000 [IQR 12 000]). Interpretation: We demonstrated that use of a targeted approach to HIV testing can increase the efficiency of case identification. This process can therefore help increase early initiation of treatment and retention of subjects diagnosed with HIV. Funding: PEPFAR

Gaps and strategies in developing health research capacity: experience from the Nigeria Implementation Science Alliance

Abstract Background Despite being disproportionately burdened by preventable diseases than more advanced countries, low- and middle-income countries (LMICs) continue to trail behind other parts of the world in the number, quality and impact of scholarly activities by their health researchers. Our strategy at the Nigerian Implementation Science Alliance (NISA) is to utilise innovative platforms that catalyse collaboration, enhance communication between different stakeholders, and promote the uptake of evidence-based interventions in improving healthcare delivery. This article reports on findings from a structured group exercise conducted at the 2016 NISA Conference to identify (1) gaps in developing research capacity and (2) potential strategies to address these gaps. Methods A 1-hour structured group exercise was conducted with 15 groups of 2–9 individuals (n = 94) to brainstorm gaps for implementation, strategies to address gaps and to rank their top 3 in each category. Qualitative thematic analysis was used. First, duplicate responses were merged and analyses identified emerging themes. Each of the gaps and strategies identified were categorised as falling into the purview of policy-makers, researchers, implementing partners or multiple groups. Results Participating stakeholders identified 98 gaps and 91 strategies related to increasing research capacity in Nigeria. A total of 45 gaps and an equal number of strategies were ranked; 39 gaps and 43 strategies were then analysed, from which 8 recurring themes emerged for gaps (lack of sufficient funding, poor research focus in education, inadequate mentorship and training, inadequate research infrastructure, lack of collaboration between researchers, research-policy dissonance, lack of motivation for research, lack of leadership buy-in for research) and 7 themes emerged for strategies (increased funding for research, improved research education, improved mentorship and training, improved infrastructure for research, increased collaboration between academic/research institutions, greater engagement between researchers and policy-makers, greater leadership buy-in for research). Conclusions The gaps and strategies identified in this study represent pathways judged to be important in increasing research and implementation science capacity in Nigeria. The inclusion of perspectives and involvement of stakeholders who play different roles in policy, research and implementation activities makes these findings comprehensive, relevant and actionable, not only in Nigeria but in other similar LMICs