title: Results of tuberculosis contact investigation in congregate settings in Korea, 2013.
abstract: OBJECTIVE
  This study aimed to check the status of the contact investigation in congregate settings to eradicate tuberculosis (TB) in the Republic of Korea.
  
  
  METHODS
  The "Integrated System for Disease and Public Health Management" is used for care and follow-up for patients and contacts of TB. We downloaded data for contact investigations conducted from January to December 2013.
  
  
  RESULTS
  A total of 1,200 contact investigations in congregate settings were carried out by 25 field investigators in 2013. We performed the status of contact investigation, TB, and LTBI rate by age, accept rate of LTBI treatment, and complete rate of LTBI treatment during 2013. A total of 1,547 index TB patients, 149,166 contacts, and 259 additional TB patients were found through the investigation. Kindergartens showed the highest LTBI rate, 19.8%, among educational facilities. The second highest was in elementary schools and the subtotal LTBI rate of educational facilities was 7.8%. Social welfare/correctional facilities and workplaces showed relatively high LTBI rates of 23.8% and 23.6%, respectively. By age, individuals >35 years showed the highest LTBI rate, followed by those aged 0-4 years, 30-34 years, and 5-9 years, with rates of 18.1%, 16.4%, and 15.4% respectively. When comparing the tuberculin skin test (TST) positive conversion ratio by facility, middle school and high school were relatively high compared to the others. The accept rate of LTBI treatment in the workplace was lowest at 63% and the complete rate in elementary schools was lowest at 76.5%.
  
  
  CONCLUSIONS
  TB contact investigation is considered as a meaningful strategy for preventing TB outbreaks in congregate settings and decreasing the prevalence of TB in young people. Results of this study could be used to establish the LTBI management policy.
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yunhyung
authors: Y
authors: Kwon
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: So Jung
authors: SJ
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Jieun
authors: J
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Seol-Yi
authors: SY
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Eun Mi
authors: EM
authors: Song
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Eun Jung
authors: EJ
authors: Lee
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yun
authors: Y
authors: Choi
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yejin
authors: Y
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Byoung Ok
authors: BO
authors: Lim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Da Sul
authors: DS
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Duksun
authors: D
authors: Choi
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Hye Sung
authors: HS
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Ji Eun
authors: JE
authors: Park
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Ji-Eun
authors: JE
authors: Yun
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Jin A
authors: JA
authors: Park
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Jong Rak
authors: JR
authors: Jung
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Joo-Kyoung
authors: JK
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Sang Hee
authors: SH
authors: Kang
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Seo Yean
authors: SY
authors: Hong
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Seung Jae
authors: SJ
authors: Lee
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Soo Jin
authors: SJ
authors: Park
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Sun Hwa
authors: SH
authors: Park
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Sunhye
authors: S
authors: Yoon
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yoonsun
authors: Y
authors: Kim
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yunjeong
authors: Y
authors: Choi
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yun Jeong
authors: YJ
authors: Seo
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Yul A
authors: YA
authors: Seo
authors: KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Jiseon
authors: J
authors: Park
authors: KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Minhee
authors: M
authors: Sung
authors: KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Minjang
authors: M
authors: Shin
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea.
authors: Hyunjin
authors: H
authors: Son
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea.
authors: Yeonkyeng
authors: Y
authors: Lee
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea.
authors: Unyeong
authors: U
authors: Go
authors: Division of HIV/AIDS and TB Control, Korea Centers for Disease Control and Prevention, Cheongju, Korea ; KTEIS (Korea Tuberculosis Epidemic Intelligence Service) Team, Cheongju, Korea.
authors: Geun-Yong
authors: GY
authors: Kwon
keywords: interferon-gamma release tests; latent tuberculosis; tuberculin test; tuberculosis