Transmission of Mycobacterium tuberculosis in Child and Adolescent Contacts of Pulmonary Tuberculosis Patients in Brazil: A Multi-Center Prospective Cohort Analysis - Summary - MDSpire

Transmission of Mycobacterium tuberculosis in Child and Adolescent Contacts of Pulmonary Tuberculosis Patients in Brazil: A Multi-Center Prospective Cohort Analysis

  • By

  • Luciana Sobral

  • María B. Arriaga

  • Alexandra B. Souza

  • Beatriz Barreto-Duarte

  • Beatriz S. Garcia-Rosa

  • Catarina D. Fernandes

  • Artur T. L. Queiroz

  • Michael S. Rocha

  • Aline Benjamin

  • Adriana S. R. Moreira

  • Jamile G. de Oliveira

  • Anna Cristina C. Carvalho

  • Renata Spener-Gomes

  • Marina C. Figueiredo

  • Solange Cavalcante

  • Betina Durovni

  • José R. Lapa-e-Silva

  • Afrânio L. Kritski

  • Valeria C. Rolla

  • Timothy R. Sterling

  • Marcelo Cordeiro-Santos

  • Mariana Araújo-Pereira

  • Bruno B. Andrade

  • December 22, 2025

  • 0 min

Share

Objective:

To evaluate specific risk factors associated with Mycobacterium tuberculosis (Mtb) transmission among children and adolescents who are close contacts of pulmonary TB cases in Brazil.

Key Findings:
  • Children exposed to active TB cases at home are nearly four times more likely to develop TB infection, highlighting the urgent need for targeted interventions.
  • The prevalence of TB infection in exposed children in Brazil is around 20%, indicating a significant public health concern.
  • Factors influencing transmission risk include host, environmental, and pathogen-related variables, necessitating a comprehensive approach to prevention.
Interpretation:

The study highlights the significant risk of TB transmission among children and adolescents in close contact with infectious cases, emphasizing the urgent need for targeted preventive measures to protect vulnerable populations.

Limitations:
  • The study's findings may not be generalizable beyond the specific regions in Brazil, which could limit the applicability of the results.
  • The IGRA test is not formally validated for children under 5 years of age, potentially affecting the accuracy of infection assessment in this age group.
Conclusion:

Identifying risk factors for Mtb transmission in children and adolescents is crucial for developing effective public health strategies to combat TB in vulnerable populations.

Original Source(s)

Transmission of Mycobacterium tuberculosis in Child and Adolescent Contacts of Pulmonary Tuberculosis Patients in Brazil: A Multi-Center Prospective Cohort Analysis

  • by Luciana Sobral, María B. Arriaga, Alexandra B. Souza, Beatriz Barreto-Duarte, Beatriz S. Garcia-Rosa, Catarina D. Fernandes, Artur T. L. Queiroz, Michael S. Rocha, Aline Benjamin, Adriana S. R. Moreira, Jamile G. de Oliveira, Anna Cristina C. Carvalho, Renata Spener-Gomes, Marina C. Figueiredo, Solange Cavalcante, Betina Durovni, José R. Lapa-e-Silva, Afrânio L. Kritski, Valeria C. Rolla, Timothy R. Sterling, Marcelo Cordeiro-Santos, Mariana Araújo-Pereira, Bruno B. Andrade

  • December 22, 2025

Related Content

7 Days Noninferior in Bacteremia

BALANCE compared 7 vs 14 days of treatment among hospitalized patients with bloodstream infections.

Comparative evaluation of SBS and RASS for sedation assessment in mechanically ventilated children

From anaphylaxis to eosinophilic esophagitis during omalizumab treatment in a boy with severe asthma and food allergy: a case report