Time, scope and resources: why U=U makes programmatic sense for Nigeria.

Nigeria's widespread mixed epidemiology HIV program has achieved a 26% reduction in new infections since 2010. New HIV infections in Nigeria remain higher in key populations, adolescent girls and young women. Treatment as prevention was a relatively new concept in Nigeria in 2016, with U=U adopted and launched in 2019 by the Federal Ministry of Health.

Building a national framework for multicentre research and clinical trials: experience from the Nigeria Implementation Science Alliance.

There is limited capacity and infrastructure in sub-Saharan Africa to conduct clinical trials for the identification of efficient and effective new prevention, diagnostic and treatment modalities to address the disproportionate burden of disease. This paper reports on the process to establish locally driven infrastructure for multicentre research and trials in Nigeria known as the Nigeria Implementation Science Alliance Model Innovation and Research Centres (NISA-MIRCs). We used a participatory approach to establish a research network of 21 high-volume health facilities selected from all 6 geopolitical zones in Nigeria capable of conducting clinical trials, implementation research using effectiveness-implementation hybrid designs and health system research.

Optimizing community linkage to care and antiretroviral therapy Initiation: Lessons from the Nigeria HIV/AIDS Indicator and Impact Survey (NAIIS) and their adaptation in Nigeria ART Surge.

Background: Ineffective linkage to care (LTC) is a known challenge for community HIV testing. To overcome this challenge, a robust linkage to care strategy was adopted by the 2018 Nigeria HIV/AIDS Indicator and Impact Survey (NAIIS). The NAIIS linkage to care strategy was further adapted to improve Nigeria's programmatic efforts to achieve the 1st 90 as part of the Nigeria Antiretroviral Therapy (ART) Surge initiative, which also included targeted community testing.

Expanding access to HIV services during the COVID-19 pandemic-Nigeria, 2020.

Background: To accelerate progress toward the UNAIDS 90-90-90 targets, US Centers for Disease Control and Prevention Nigeria country office (CDC Nigeria) initiated an Antiretroviral Treatment (ART) Surge in 2019 to identify and link 340,000 people living with HIV/AIDS (PLHIV) to ART. Coronavirus disease 2019 (COVID-19) threatened to interrupt ART Surge progress following the detection of the first case in Nigeria in February 2020. To overcome this disruption, CDC Nigeria designed and implemented adapted ART Surge strategies during February-September 2020.

Retention-in-care in the PMTCT cascade: definitions matter! Analyses from the INSPIRE projects in Malawi, Nigeria and Zimbabwe.

Introduction: Definitions of retention-in-care in Prevention of Mother-to-Child Transmission of HIV (PMTCT) vary substantially between studies and programmes. Some definitions are based on visits missed/made, others on a minimum total number of visits, or attendance at a final clinic visit at a specific time. An agreed definition could contribute to developing evidence-based interventions for improving retention-in-care.

Opportunities and challenges to integrating mental health into HIV programs in a low- and middle-income country: insights from the Nigeria implementation science Alliance.

Background: In Nigeria, there is an estimated 1.9 million people living with HIV (PLHIV), 53% of whom utilize HIV care and services. With decreasing HIV-related deaths and increasing new infections, HIV with its associated comorbidities continue to be a key public health challenge in Nigeria.

Challenges and Strategies for Improving Training of Mid-Level Research Personnel in Nigeria.

Background: Contextual research evidence is needed to reduce morbidity and mortality due to chronic but preventable diseases in low- and middle-income countries. Nigeria, Africa's most populous country, is particularly burdened by these diseases despite its academic and research infrastructure. A major impediment to developing robust evidence on sustainable disease prevention and treatment strategies is the lack of skilled research personnel.

Generating evidence for health policy in challenging settings: lessons learned from four prevention of mother-to-child transmission of HIV implementation research studies in Nigeria.

Background: Implementation research (IR) facilitates health systems strengthening and optimal patient outcomes by generating evidence for scale-up of efficacious strategies in context. Thus, difficulties in generating IR evidence, particularly in limited-resource settings with wide disease prevention and treatment gaps, need to be anticipated and addressed. Nigeria is a priority country for the prevention of mother-to-child transmission of HIV (PMTCT).

Correction to: Adolescent Coordinated Transition (ACT) to improve health outcomes among young people living with HIV in Nigeria: study protocol for a randomized controlled trial.

In the original publication [1] the figure captions of Figs. 2 and 3 were reversed. The correct version can be found in this Erratum.

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

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.

Adolescent Coordinated Transition (ACT) to improve health outcomes among young people living with HIV in Nigeria: study protocol for a randomized controlled trial.

Background: Adolescents living with HIV (ALHIV) have worse health outcomes than other populations of people living with HIV. Contributing factors include lack of standard and comprehensive procedures for ALHIV transitioning from pediatric to adult care. This has contributed to poor retention at, and following transition, which is problematic especially in high ALHIV-burden, resource-limited settings like Nigeria.

Modeling the Impact of Retention Interventions on Mother-to-Child Transmission of HIV: Results From INSPIRE Studies in Malawi, Nigeria, and Zimbabwe.

Background: Six implementation research studies in Malawi, Nigeria, and Zimbabwe tested approaches for improving retention in care among women living with HIV. We simulated the impact of their interventions on the probability of HIV transmission during pregnancy and breastfeeding.

Methods: A computer-based state-transition model was developed to estimate the impact of the retention interventions.

Using Small Tests of Change to Improve PMTCT Services in Northern Nigeria: Experiences From Implementation of a Continuous Quality Improvement and Breakthrough Series Program.

Background: Continuous Quality Improvement (CQI) is a process where health teams systematically collect and regularly reflect on local data to inform decisions and modify local practices and so improve delivery of services. We implemented a cluster randomized trial to examine the effects of CQI interventions on Prevention of Mother-to-Child Transmission (PMTCT) services. Here, we report our experiences and challenges establishing CQI in 2 high HIV prevalence states in northern Nigeria.

The Effect of a Continuous Quality Improvement Intervention on Retention-In-Care at 6 Months Postpartum in a PMTCT Program in Northern Nigeria: Results of a Cluster Randomized Controlled Study.

Background: Retention in care is critical for improving HIV-infected maternal outcomes and reducing vertical transmission. Health systems' interventions such as continuous quality improvement (CQI) may support health services to address factors that affect the delivery of HIV-related care and thereby influence rates of retention-in-care.

Methodology: We evaluated the effect of a CQI intervention on retention-in-care at 6 months postpartum of pregnant women and mothers living with HIV who had been started on lifelong antiretroviral treatment.

Increasing retention in care of HIV-positive women in PMTCT services through continuous quality improvement-breakthrough (CQI-BTS) series in primary and secondary health care facilities in Nigeria: a cluster randomized controlled trial. The Lafiyan Jikin Mata Study.

Background: Rates of retention in care of HIV-positive pregnant women in care programs in Nigeria remain generally poor with rates around 40% reported for specific programs. Poor quality of services in health facilities and long waiting times are among the critical factors militating against retention of these women in care. The aim of the interventions in this study is to assess whether a continuous quality improvement intervention using a Breakthrough Series approach in local district hospitals and primary health care clinics will lead to improved retention of HIV-positive women and mothers.