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. 2019 Jan:78:8-14.
doi: 10.1016/j.ijid.2018.09.019. Epub 2018 Sep 26.

Adolescent tuberculosis associated with tuberculosis exposure in classrooms and dorm rooms in Guangxi, China

Dongxiang Pan  1 , Rushu Lan  2 , Edward A Graviss  3 , Dingwen Lin  2 , Dabin Liang  2 , Edward McNeil  4 , Mei Lin  5 , Virasakdi Chongsuvivatwong  6
Affiliations

Adolescent tuberculosis associated with tuberculosis exposure in classrooms and dorm rooms in Guangxi, China

Dongxiang Pan et al. Int J Infect Dis. 2019 Jan.

Abstract

Objective: Quantify tuberculosis (TB) risk attributable to dorm room exposure in addition to classroom exposure.

Methods: Adolescent school contact investigations were conducted for every reported index TB case, and similar contact investigations were conducted in selected community-control classes from November 2016 to October 2017 in Guangxi, China.

Results: A total of 6263 contacts of 112 index TB cases and 6130 classmates of 112 controls were investigated. There were 14, 12, and 2 new active TB cases detected among classmates/non-roommates of index cases, classmates/roommates of index cases, and control classmates, respectively. Compared with control contacts, the adjusted relative risk (95% confidence interval (CI)) and population attributable fraction (PAF) for being a classmate/non-roommate of the index case increased the risk of active TB diagnosis to 8.44 (95% CI: 1.31-54.48) and 44.1%. The adjusted RR and PAF for being a classmate/roommate of the index case was 29.37 (95% CI: 3.80, 227.11) and 41.4%. Being classmates/roommates significantly increased the risk of TB compared to a classmate/non-roommate of the index case (RR=3.48, 95% CI: 1.64, 7.40).

Conclusion: The additional risk of TB due to exposure in the dorm room should be taken into account in planning of TB prevention and control in boarding schools.

Keywords: Tuberculosis; adolescent; contact investigation; school.

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Conflict of interest statement

Competing interests

The authors declare that they have no competing interests.

Figures

Figure 1.
Figure 1.
Flow chart indicating screening of subject for active TB. Note: * I = index case contacts, C = students in control classes.
Figure 2.
Figure 2.
Location of study districts/counties in Guangxi, China.
See this image and copyright information in PMC

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