Jointly conducted by IRD and INSERM, this research develops a community intervention for the management of children in contact with tuberculosis.
Anca Vasiliu, researcher at TransVIHMI (Institut de Recherche pour le Développement).
Thesis defended in 2021 at the doctoral school École doctorale Sciences Chimiques et Biologiques pour la Santé (Montpellier ; 1992-....).
This research is the result of an international co-supervision between several partner institutions.
Referenced in the ABES/STAR network, this thesis meets the rigorous criteria of French higher education.
Pediatric tuberculosis remains a major public health challenge, particularly in high-prevalence countries like Cameroon and Uganda. This disease, which affects millions of children worldwide, is often underdiagnosed and undertreated, leading to disastrous consequences for the health of the youngest. Research conducted by Anca Vasiliu, in collaboration with the Institute for Research and Development (IRD) and INSERM, proposes an innovative community-based approach for the screening and preventive treatment of children in contact with tuberculosis patients. Indeed, children represent a significant share of tuberculosis cases, but their management is often neglected due to diagnostic difficulties and insufficient implementation of screenings.
The study highlighted the importance of a simplified screening tool, whose negative predictive value reaches 98.7% for children under 5 years old. This encouraging result underscores the need to integrate adapted screening methods into existing health services. For example, the use of simple questionnaires and rapid tests could enable community health workers to identify at-risk children without requiring heavy resources. The randomized controlled trial, which began in October 2019, assessed the acceptability of the intervention and recruitment capacity, revealing strong adherence from tuberculosis patients and their families.
However, adjustments are necessary to ensure the integration of this intervention into local health systems. Preliminary results show that community actors can play a key role in awareness-raising and screening. These actors, often from the communities themselves, are able to build trust with families, which is essential for encouraging screening and preventive treatment. But it is crucial to train these actors and involve them in the process. Tailored training programs could provide them with the necessary skills to carry out these tasks.
The question that arises is: how to sustain this approach and make it accessible to all at-risk children? Decision-makers must consider financing and implementation strategies that ensure equitable access to care. This could include establishing public-private partnerships to mobilize financial resources, as well as developing health policies that prioritize pediatric tuberculosis. Furthermore, collaboration among various health actors, including NGOs and local governments, is essential to maximize the impact of this initiative. For example, joint awareness campaigns could be organized to inform communities about the risks of tuberculosis and the importance of early screening.
It is also important to take into account the cultural and social specificities of the regions concerned. Local beliefs and the stigma associated with tuberculosis can pose barriers to seeking care. Thus, a context-sensitive approach is essential to ensure family adherence.
In conclusion, this research paves the way for better management of children exposed to tuberculosis, but it requires strong commitment from decision-makers to transform these promising results into concrete actions on the ground. Implementing an effective community intervention could not only reduce morbidity and mortality related to pediatric tuberculosis but also strengthen local health systems by integrating communities into the fight against this disease. Ultimately, this is a public health issue that deserves particular attention and concerted actions to ensure a better future for vulnerable children.
Key Facts
- 10 million : Number of people affected by tuberculosis worldwide in 2019 according to WHO.
- 15-20 % : Proportion of children among tuberculosis cases in high-prevalence countries.
- 98.7 % : Negative predictive value of a simplified screening tool for children under 5 years old.
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Sources and Access
Anca Vasiliu. Designing a community intervention for tuberculosis household child contact management and assessing the feasibility of its evaluation in Cameroon and Uganda. Human health and pathology. Université Montpellier, 2021. English. ⟨NNT : 2021MONTT078⟩. ⟨tel-03615102⟩