Tuberculosis Diagnosis, Treatment, and Prevention Services for Children Living with HIV in Low- and Middle-Income Countries: A Multiregional Site Survey

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Résumé

Background: Tuberculosis (TB) remains a leading cause of morbidity and mortality for children living with HIV (CLHIV),
with gaps in TB screening, diagnostics, management, and TB preventive therapy (TPT). We investigated reported practices in these
domains at sites caring for CLHIV in low- and middle-income countries (LMICs) within the International Epidemiology Databases
to Evaluate AIDS (IeDEA) consortium.
Methods: We implemented a site survey from September 2020 to February 2021, querying pre-pandemic practices. This analysis
included sites in LMICs providing care for CLHIV that diagnosed TB in 2019. We analyzed responses using descriptive statistics
and assessed regional differences using Fisher’s exact or chi-square tests.
Results: Of 238 IeDEA sites, 227 (95%) responded and 135 met the inclusion criteria. Most (90%) reported screening for TB
at HIV care enrollment. Access to diagnostics varied significantly by region, including nucleic acid amplification testing (NAAT,
range 67-100%), mycobacterial culture (range 43%-83%), and drug susceptibility testing (range 30%-82%) (P < .001). On-site TB
treatment was high (90%). Reported stock-outs occurred for isoniazid (23/116, 20%) and other TB medications (11/114, 9.6%, range
0%-33%, P = .008). TPT provision ranged 50%-100% (P < .001). Six months of isoniazid was the most common TPT regimen for
children (88%). Shorter TPT regimens were uncommon (0.9%-2.8%), as were regimens for multidrug-resistant TB exposure (4.6%).
Conclusions: Overall reported availability of NAAT and integrated TB/HIV treatment for CLHIV cared for at these IeDEA
sites in LMICs is encouraging but varies by context. Heterogeneous implementation gaps remain—particularly for drug susceptibility
testing, TPT delivery, and TPT regimens—which may impede TB prevention, management, and successful outcomes for
CLHIV, warranting continued close attention over time and as global TB care guidelines and services evolve.

Mots-clés

pediatrics; TB; HIV; diagnostic access; TB preventive therapy