A Measure of Transmission of Tuberculosis Infection among Children in Household Contact

Abstract

Introduction: Tuberculosis (TB) is transmitted through droplets from patients having pulmonary TB, Young children living in the same household are at higher risk Tuberculosis, with great potential to benefit from screening and preventive treatment. This study was conducted with the objectives to estimate the prevalence of TB infection among under five years old children in household contact with pulmonary tuberculosis patients, and assess the factors associated with transmission of TB.
 Methods: Pulmonary TB patients receiving treatment from the DOTS Centres in Sunsari District (Index Case-IC) were visited in their household to identify and assess contacts below five years of age. Transverse induration greater than10 mm was defined as a positive Mantoux test suggestive of tubercular infection.
 Results: Among 190 household contacts, Mantoux was positive in 13.7% (95%CI: 11.2-16.2). Higher sputum bacillary load (adjusted OR=3.03; 95% CI 1.01-9.1) and spitting habits of Index Cases (aOR=3.1; 95% CI 1.2-7.7), first-degree relationship (aOR=3.5; 95%CI 1.4-8.7) and longer duration of contact (aOR- 6.7; 95% CI 1.4-32.2), were factors significantly associated with positive Mantoux test in the under-five years old household contact.
 Conclusion: The prevalence of tuberculosis infection among under-five children in contact with pulmonary tuberculosis patients was 13.7%, which is nearly double than the results of first national tuberculin survey (7%), conducted by National Tuberculosis Centre. This highlights the need for a competent & functioning contact tracing mechanism to halt the chain of transmission of infection. Social and behavioral factors existing in the household were significantly associated with the transmission of Tuberculosis infection.

Paediatric multidrug-resistant tuberculosis in a resource-limited high TB burden setting: a case report

“…These include intimacy of contact with the index case, sleeping arrangements, closer relationship with the case, longer duration of exposure and sputum status of the TB patient. 4 A very high prevalence of TB infection (20.4%) was reported among Saharia children. 5 Despite the national policy of universal vaccination, BCG scar was seen in only 34.6% of children in Saharia community.…”

Risk Factors for the Incidence of Tuberculosis in Children at Sumedang District, West Java, Indonesia.

“…19 The research results also in line with Sharma (2018) that there is a significant link between the child's contact history with TB BTA + 2 and + 3 sufferers with TB of children. 20 Close contact with adult TB patients can be seen from 2 aspects that are aspects of distance such as using "one bed" criteria and the time aspect "time intensity </> 8 hours/day. 21 Than there was a significant relationship between the behavior of mothers and the incidence of Tuberculosis in children.…”