In:
The American Journal of Tropical Medicine and Hygiene, American Society of Tropical Medicine and Hygiene, Vol. 98, No. 2 ( 2018-02-07), p. 372-375
Abstract:
We conducted a population-based study of tuberculosis (TB) from 2009 to 2015 in an indigenous community of Brazil, the largest in the country, to investigate risk factors associated with recent TB transmission. The clinical isolates of Mycobacterium tuberculosis were genotyped by IS 6110 -RFLP (restriction fragment length polymorphism) and spoligotyping analysis. Among 67 isolates typed by RFLP, 69% fell into fifteen clusters, and 91% of TB cases with shared IS 6110 -RFLP pattern were diagnosed within 2 years of another case in the cluster. Individual risk factors associated with genetic clustering were domestic overcrowding (odds ratio [OR]: 6.10; 95% confidence interval [CI] : 1.50–24.88) and low social class (OR: 3.72; 95% CI: 1.00–13.98). Most reported contacts (76%) were identified within the household of the index TB case, but most of the genetic clustering of M. tuberculosis occurred outside of household (79%). Expanded contacts investigation and prophylaxis outside of household should be considered as a priority for TB control programs in this population.
Type of Medium:
Online Resource
ISSN:
0002-9637
,
1476-1645
DOI:
10.4269/ajtmh.17-0480
Language:
Unknown
Publisher:
American Society of Tropical Medicine and Hygiene
Publication Date:
2018
detail.hit.zdb_id:
1491674-5