Tuberculosis and integrated child health - Rediscovering the principles of Alma Ata

Improving TB detection among children in routine clinical care through intensified case finding in facility-based child health entry points and decentralized management: A before-and-after study in Nine Sub-Saharan African Countries

In 2022, an estimated 1.25 million children <15 years of age developed tuberculosis (TB) worldwide, but >50% remained undiagnosed or unreported. WHO recently recommended integrated and decentralized models of care as an approach to improve access to TB services for children, but evidence remains limited. The Catalyzing Paediatric TB Innovation project (CaP-TB) implemented a multi-pronged intervention to improve TB case finding in children in nine sub-Saharan African countries. The intervention introduced systematic TB screening in different facility-based child-health entry-points, decentralisation of TB diagnosis and management, improved sample collection with access to Xpert® MTB/RIF or MTB/RIF Ultra testing, and implementation of contact investigation. Pre-intervention records were compared with those during intervention to assess effect on paediatric TB cascade of care. The intervention screened 1 991 401 children <15 years of age for TB across 144 health care facilities. The monthly paediatric TB case detection rate increased significantly during intervention versus pre-intervention (+46.0%, 95% CI 36.2-55.8%; p<0.0001), with variability across countries. The increase was greater in the <5 years old compared to the 5-14 years old (+53.4%, 95% CI 35.2-71.9%; p<0.0001 versus +39.9%, 95% CI 27.6-52.2%; p<0.0001). Relative contribution of lower-tier facilities to total case detection rate increased from 37% (71.8/191.8) pre-intervention to 50% (139.9/280.2) during intervention. The majority (89.5%) of children with TB were identified through facility-based intensified case-finding and primarily accessed care through outpatient and inpatient departments. In this multi-country study implemented under real-life conditions, the implementation of integrated and decentralized interventions increased paediatric TB case detection. The increase was driven by lower-tier facilities that serve as the primary point of healthcare contact for most patients. The effect was greater in children < 5 years compared to 5-14 years old, representing an important achievement as the TB detection gap is higher in this subpopulation. (Study number NCT03948698).

Tuberculosis in children with severe acute malnutrition

INTRODUCTION

With growing attention globally to the childhood tuberculosis epidemic after decades of neglect, and with the burden of severe acute malnutrition (SAM) remaining unacceptably high worldwide, the collision of these two diseases is an important focus for improving child health.

AREAS COVERED

This review describes the clinical and public health implications of the interplay between tuberculosis and SAM, particularly for children under the age of five, and identifies priority areas for improved programmatic implementation and future research. We reviewed the literature on PubMed and other evidence known to the authors published until August 2021 relevant to this topic.

EXPERT OPINION

To achieve the World Health Organization's goal of eliminating deaths from childhood tuberculosis and to improve the abysmal outcomes for children with SAM, further research is needed to 1) better understand the epidemiologic connections between child tuberculosis and SAM, 2) improve case finding of tuberculosis in children with SAM, 3) assess unique treatment considerations for tuberculosis when children also have SAM, and 4) ensure tuberculosis and SAM are strongly addressed in decentralized, integrated models of providing primary healthcare to children.

Integration of TB into child health policies in Africa's high-burden countries: a normative analysis

Integration of paediatric TB care into decentralised child health services has the potential to reduce the large proportion of childhood TB that remains undiagnosed. We performed a review of national guidelines and policies for TB and child health to evaluate the normative integration of paediatric TB into existing child health programmes in 15 high TB burden countries in Africa. While integration is addressed in 80% of the national strategic plans for TB, the child health strategies insufficiently address TB in their plans to reduce child mortality. Emphasis needs to be put on multi-sectoral collaboration among national health programmes.

Galvanizing Action on Primary Health Care: Analyzing Bottlenecks and Strategies to Strengthen Community Health Systems in West and Central Africa

INTRODUCTION

The renewed commitment to primary health care (PHC) presents an opportunity to strengthen health systems in West and Central Africa (WCA). Though evidence-based cost-effective interventions that are predicted to prevent up to one-third of maternal, newborn, and child health complications and deaths with universal coverage have been identified, more than 50% of people living in rural areas or from poor families still do not have access to these interventions in resource-constrained settings.

METHODS

We conducted a multicountry systematic analysis of bottlenecks and proposed solutions to strengthen community health systems through a series of collaborative workshops in 22 countries in WCA. Countries were categorized by their under-5 mortality rate (U5MR) to assess specificities related to reported challenges. We also reviewed existing data on selected health system tracer interventions to analyze country profiles.

RESULTS

The bottlenecks identified as severe or very severe were related to health financing (19 countries, 86%), essential medical technology and products (16 countries, 73%), integrated health service delivery (14 countries, 64%), and community ownership and partnerships (self-reported by 14 countries, 64%). Only the integrated service delivery was self-reported as a severe challenge by countries with high U5MR. The issue of human resources for community health was one of the least reported challenges.

CONCLUSION

In WCA, strengthening community health systems as part of PHC revitalization efforts should focus on increasing health financing and innovative investments, strengthening the logistics management system, and fostering community ownership and partnerships. Countries with high U5MR should also reinforce integrated service delivery approaches through innovation. Government actions galvanized by global and regional ongoing initiatives should be sustained to ensure that no one is left behind.

Paediatric tuberculosis - new advances to close persistent gaps

Young children are most vulnerable to develop severe forms of tuberculosis (TB) and are over-represented among TB deaths. Almost all children estimated to have died from TB were never diagnosed or offered TB treatment. Improved access to TB preventive treatment (TPT) requires major upscaling of household contact investigation with allocation of adequate resources. Symptom-based screening is often discouraged in adults for fear of generating drug resistance, if TB cases are missed. However, the situation in vulnerable young children is different, as they present minimal risk of drug resistance generation. Further, the perceived need for additional diagnostic evaluation presents a major barrier to TPT access and underlies general reluctance to consider pragmatic decentralised models of care. Widespread roll-out of Xpert MTB/RIF Ultra® represents an opportunity for improved case detection in young children, but attaining full impact will require the use of non-sputum specimens. The new Fujifilm SILVAMP TB LAM® urine assay demonstrated good diagnostic accuracy in HIV-positive and malnourished children, but further validation is required. Given the limited accuracy of all available tests and the excellent tolerance of TB drugs in children, the global community may have to accept some over-treatment if we want to close the persistent case detection gap in young children.

Preventing tuberculosis in children: A global health emergency

It is estimated that 20 million children are exposed to tuberculosis (TB) each year, making TB a global paediatric health emergency. TB preventative efforts have long been overlooked. With the view of achieving "TB elimination" in "our lifetime", this paper explores challenges and potential solutions in the TB prevention cascade, including identifying children who have been exposed to TB; detecting TB infection in these children; identifying those at highest risk of progressing to disease; implementing treatment of TB infection; and mobilizing multiple stakeholders support to successfully prevent TB.

A training module to empower marginalised Northern Borneo islanders for tuberculosis control

Empowering marginalised urban islanders with limited health accessibility through knowledge transfer program for controlling pulmonary tuberculosis (PTB) requires a specific training module. The study was aimed to develop this training module by adapting and modifying the IMCI (Integrated Management of Childhood Illness) framework. Structuring the content for the knowledge and skills for PTB control in the module was based on the National Strategic Plan for Tuberculosis Control 2016-2020. A total of five knowledge and skills were structured: i) PTB disease and diagnosis, ii) PTB treatment, iii) preventive PTB measures, iv) prevention of malnutrition, and v) psychosocial discrimination. The IMCI framework was modified through 3 ways: i) identifying signs and symptoms of PTB, ii) emphasising the IMCI’s 5 steps of integrated management: assess, diagnose, treat, counsel and detect, and iii) counseling on BCG immunisation, malnutrition, environmental modifications and stigma on PTB.

Challenges and controversies in childhood tuberculosis

Children bear a substantial burden of suffering when it comes to tuberculosis. Ironically, they are often left out of the scientific and public health advances that have led to important improvements in tuberculosis diagnosis, treatment, and prevention over the past decade. This Series paper describes some of the challenges and controversies in paediatric tuberculosis, including the epidemiology and treatment of tuberculosis in children. Two areas in which substantial challenges and controversies exist (ie, diagnosis and prevention) are explored in more detail. This Series paper also offers possible solutions for including children in all efforts to end tuberculosis, with a focus on ensuring that the proper financial and human resources are in place to best serve children exposed to, infected with, and sick from all forms of tuberculosis.