Screening on close contacts of school tuberculosis patients in Sichuan Province from 2020 to 2022
Objective To understand the screening situation of close contacts of pulmonary tuberculosis patients in schools in Sichuan Province from 2020 to 2022 and provide reference basis for tuberculosis control strategies in schools.Methods Data on the screening of close contacts in schools in Sichuan Province were collected from the"Infectious Disease Monitoring System"subsystem of the"China Disease Prevention and Control Information System"during the 2020 to 2022 year.The software SAS 9.4 was adopted.Chi-square test or logistic regression model was used to analyze the screening situation,screening results,case detection,preventive treatment,and influencing factors based on time,region,and age.The significance level was set at α=0.05.Result A total of 754433 close contacts in schools in Sichuan Province should be screened from 2020 to 2022,with a screening rate of 94.91％.There were significant differences in screening rates among different age groups,regions,and years(all P＜0.05).Compared to 2020,the risk of suspected symptoms(OR=0.538,95％CI:0.510-0.568)and positive tuberculin skin test(PPD)results(OR=0.920,95％CI:0.882-0.959)in 2022 were lower.Individuals aged 15 years and above had lower rates of suspected symptoms(OR=0.809,95％CI:0.769-0.852)and higher rates of positive PPD results(OR=1.992,95％CI:1.928-2.059).Minority areas had lower rates of suspected symptoms(OR=0.726,95％CI:0.693-0.760)and higher rates of positive PPD results(OR=1.919,95％CI:1.849-1.990).A total of 1 356 pulmonary tuberculosis patients were diagnosed among the close contacts screened in schools,with a detection rate of 0.19％.The acceptance rate of preventive treatment after screening of close contacts at school was 44.76％,and the completion rate of preventive treatment was 35.74％.Conclusions In conclusion,it is necessary to further strengthen the screening efforts for close contacts in schools in Sichuan Province.Schools and medical institutions should pay more attention to key populations,such as those from minority areas and those aged 15 years and above.It is important to optimize symptom screening methods,standardize the screening scope,improve symptom screening and laboratory testing capabilities,and ensure the level of case detection.Furthermore,efforts should continue to promote education on preventive treatment and continue to advance the preventive treatment of latent tuberculosis infection among individuals in the province.
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