Epidemiological characteristics and influencing factors of delayed diagnosis of pulmonary tuberculosis in schools in Hefei during 2019-2020

CHEN Wei; QIAN Bing; ZHANG Jieying; CAO Hong; GU Yingqiang

doi:10.16835/j.cnki.1000-9817.2021.12.004

Volume 42 Issue 12

Dec. 2021

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CHEN Wei, QIAN Bing, ZHANG Jieying, CAO Hong, GU Yingqiang. Epidemiological characteristics and influencing factors of delayed diagnosis of pulmonary tuberculosis in schools in Hefei during 2019-2020[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(12): 1772-1775. doi: 10.16835/j.cnki.1000-9817.2021.12.004

Citation:

CHEN Wei, QIAN Bing, ZHANG Jieying, CAO Hong, GU Yingqiang. Epidemiological characteristics and influencing factors of delayed diagnosis of pulmonary tuberculosis in schools in Hefei during 2019-2020[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(12): 1772-1775. doi: 10.16835/j.cnki.1000-9817.2021.12.004

Citation:

CHEN Wei, QIAN Bing, ZHANG Jieying, CAO Hong, GU Yingqiang. Epidemiological characteristics and influencing factors of delayed diagnosis of pulmonary tuberculosis in schools in Hefei during 2019-2020[J]. CHINESE JOURNAL OF SCHOOL HEALTH, 2021, 42(12): 1772-1775. doi: 10.16835/j.cnki.1000-9817.2021.12.004

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Epidemiological characteristics and influencing factors of delayed diagnosis of pulmonary tuberculosis in schools in Hefei during 2019-2020

doi: 10.16835/j.cnki.1000-9817.2021.12.004

Department of Tuberculosis Prevention and Control, Hefei Center of Disease Control and Prevention in Anhui Province, Hefei (230061), China

Received Date: 2021-08-20
Rev Recd Date: 2021-11-18

Available Online: 2021-12-23

Publish Date: 2021-12-25

Abstract

Abstract

Objective To explore epidemiological characteristics and diagnosis delay among tuberculosis patients, and to provide reference basis for pulmonary tuberculosis prevention and control in schools. Methods Retrospective data of school-based tuberculosis patients information and cluster epidemiological information in Hefei during Jan. 2019 to Dec. 2020 was collected. Changes of the epidemiological characteristics and diagnosis delay of school tuberculosis epidemic and possible role were explored. Results The reported incidence of Hefei school pulmonary tuberculosis was 14.04/10⁵ in 2020. Two peaks of cases occurred during May to Jun. and Oct. to Nov. Teacher account for 8.00% of pulmonary tuberculosis cases in school, a significant increase was observed compared with 2019 (χ²=4.30, P < 0.05). In 2020, the median length of treatment for cases reported by local medical institutions was 5.14 days, and the median length of diagnosis was 18 days, both of which were shorter than those in 2019 (Z=22.45, 4.52, P < 0.05). In multiple cases sporadic of school pulmonary tuberculosis, strong positive rate of PPD test was 13.50% among close contacts, and new case detectable rate was 0.62%. The median duration from exposure to symptoms onset among close contacts was 132 days, which significant increased compared to 2019 (Z=251.50, P < 0.05). The diagnosis delay among tuberculosis patients diagnosed by chest CT was 12.10%, and was 16.15% through supervision by school or parents. Chest radiograph was associated with higher risk of delayed diagnosis (OR=4.34, P < 0.05) compared to chest CT as the first medical radiology option. Low delayed diagnosis rate was associated with supervision of tuberculosis by school or parents than control (OR=0.26, P < 0.05). Conclusion Factors such as the selection of diagnostic radiology and case supervision are associated with delay diagnosis. It's necessary to strengthen the management and monitoring of the pulmonary tuberculosis epidemic in school.
- Tuberculosis, pulmonary,
- Epidemiology,
- Diagnosis,
- Regression analysis,
- Student health services

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References(16)

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