Tuberculosis prevalence and associated factors among persons with diabetes mellitus after intensified case finding in three West African countries

Abstract

Background: To determine the prevalence of tuberculosis (TB) and associated factors in persons with diabetes mellitus (DM) in Benin, Guinea and Senegal.
Methods: A cross-sectional study was conducted in the largest DM center in each country. Participants systematically underwent clinical screening and chest radiography. Participants who were symptomatic or with abnormal radiography underwent bacteriological investigations (sputum smear, Xpert MTB/RIF and culture) on sputum. Participants with no TB at enrolment were re-examined for TB six months later. Logistic regression was performed to identify factors associated with TB.
Results: There were 5870 DM patients: 1881 (32.0%) in Benin, 1912 (32.6%) in Guinea and 2077 (35.4%) in Senegal. Of these, 114 had bacteriologically-confirmed TB, giving a pooled prevalence of 1.9% (95%CI=1.6-2.3). TB prevalence was 0.5% (95%CI=0.3-1.0), 2.4% (95%CI=1.8-3.2) and 2.8% (95%CI=2.2-3.6), respectively, in Benin, Guinea and Senegal. Factors associated with an increased odds of TB diagnosis were a usual residence in Guinea (aOR=2.62;95%CI=1.19-5.77; p=0.016) or in Senegal (aOR=3.73;95%CI=1.85-7.51; p<0.001), the age group of 35-49 years (aOR=2.30;95%CI=1.11-4.79; p=0.025), underweight (aOR=7.34;95%CI=4.65-11.57; p<0.001) and close contact with a TB case (aOR=2.27;95%CI=1.37-3.76; p=0.002). Obesity was associated with lower odds of TB (aOR=0.20; 95%CI=0.06-0.65; p=0.008).
Conclusion: TB is prevalent among DM patients in Benin, Guinea and Senegal and higher than among the general population. The findings support the need for intensified case finding in DM patients in order to ensure systematic early detection of TB during the routine consultation process.

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Author Biography

Corinne Merle, Tropical Disease Research Special Programme, World Health Organization, Geneva

London School of Hygiene and Tropical Medicine, LSHTM, London, UK

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Published
2021-08-04
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Original Research Articles
Supporting Agencies
Expertise France, Ministry of Foreign Affairs of France (Grant N°14SANIN210)
Keywords:
Tuberculosis, diabetes mellitus, disease burden, risk factors, West Africa
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How to Cite
Wachinou, A. P., Ade, S., Ndour Mbaye, M., Bah, B., Balde, N., Gninkoun, J., Bekou, W., Sarr, M., Bah Sow, O., Affolabi, D., & Merle, C. (2021). Tuberculosis prevalence and associated factors among persons with diabetes mellitus after intensified case finding in three West African countries. Multidisciplinary Respiratory Medicine, 16. https://doi.org/10.4081/mrm.2021.783