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Updated: Jan 19, 2026

The MODS method for diagnosis of tuberculosis and multidrug resistant tuberculosis
Published on: August 11, 2008
Resistant tuberculosis in children under 15 years of age, Colombia 2010-2015
Angie Paola Zabaleta1, Claudia Llerena, Angélica Valbuena
1Grupo de Micobacterias, Dirección Redes en Salud Pública, Instituto Nacional de Salud, Bogotá, D.C., Colombia. azabaleta@ins.gov.co.
Insights
Drug-resistant tuberculosis in Colombian children under 15 is a significant public health concern. This study highlights the need for improved diagnostic tools to combat rising resistance rates in pediatric tuberculosis cases.
Area of Science:
- Public Health
- Infectious Diseases
- Pediatrics
Background:
- Tuberculosis (TB) in children reflects recent community transmission, with an estimated one million global cases annually.
- Colombia reported 291 TB cases in children in 2015, underscoring the need for updated surveillance data.
Purpose of the Study:
- To update drug resistance information from TB surveillance in Colombian children under 15 (2010-2015).
- To analyze drug resistance profiles based on treatment history (new vs. previously treated) and patient demographics.
Main Methods:
- Cross-sectional retrospective study analyzing variables: origin, gender, age, TB type, HIV status.
- Classification of cases into new and previously treated to assess first and second-line drug resistance.
- Inclusion of sensitivity testing results for analyzed cases.
Main Results:
- Of 565 studied cases, 89.1% were new TB cases; 10.9% were previously treated.
- Multidrug-resistant tuberculosis (MDR-TB) was found in 3.9% of new cases and 4.8% of previously treated cases.
- Global drug resistance was 9.5% in new cases and 19.3% in previously treated cases, with extremely resistant TB at 9.0% in new cases.
Conclusions:
- High rates of multidrug-resistant and extensively drug-resistant tuberculosis in children necessitate urgent attention.
- The study underscores the critical need for faster, more sensitive diagnostic tests, such as molecular assays recommended by the WHO.
- Public health authorities should promote the adoption of advanced diagnostic technologies for timely and accurate TB detection in pediatric populations.
Abstract:
Introduction: Tuberculosis in children is a recent transmission reflection in the community. It is estimated that every year one million children get sick in the world because of this. In Colombia, 291 cases were notified in 2015. Objective: To update the information obtained from the surveillance activities of the drugresistance laboratory in children younger than 15 years of age in Colombia between 2010 and 2015. Materials and methods: This was a cross-sectional retrospective study. We studied the variables of origin, gender, age, type of tuberculosis, and HIV status in sensitive and resistant cases. We classified them according to their treatment background between new and previously treated to analyze their first and second line drug resistance profile. Results: From the notified cases, 16.4 % had a sensitivity test. 50.6 % were women, the pulmonary form was present in 70.6% cases, and 1.4 % presented with tuberculosis/HIV coinfection. We studied 565 cases, from which 503 (89.1 %) were new, presenting with multidrug-resistant tuberculosis, and a global resistance of 3.9 % and 9.5 %, respectively. From them, 62 had been previously treated (10.9 %), with 4.8 % and 19.3 % multidrug resistance and global resistance, respectively. There was no evidence of statistically significant differences during the studied years. Extremely resistant tuberculosis in new cases was 9.0 %. Conclusions: It is necessary for the Ministerio de Salud y Protección Social and the Instituto Nacional de Salud to promote the use of faster and more sensitive diagnostic tests such as the molecular ones recommended by the World Health Organization.
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