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Survey of Secondary Infections within the Households of Newly Diagnosed Tuberculosis Patients

새로 진단된 결핵 환자의 가족 내 2차 감염 양상 조사

  • Lee, Min Hyun (Department of Pediatrics, Graduate School of Medicine, Gachon University) ;
  • Sung, Jae Jin (Department of Pediatrics, Graduate School of Medicine, Gachon University) ;
  • Eun, Byung Wook (Department of Pediatrics, Eulji University School of Medicine) ;
  • Cho, Hye-Kyung (Department of Pediatrics, Graduate School of Medicine, Gachon University)
  • 이민현 (가천대학교 의학전문대학원 소아청소년과) ;
  • 성재진 (가천대학교 의학전문대학원 소아청소년과) ;
  • 은병욱 (을지대학교 의학전문대학원 소아청소년과) ;
  • 조혜경 (가천대학교 의학전문대학원 소아청소년과)
  • Received : 2014.08.13
  • Accepted : 2014.10.27
  • Published : 2015.04.25

Abstract

Purpose: The purpose of this study is to investigate secondary infections within the households of newly diagnosed tuberculosis patients. Methods: We collected data on household infections of tuberculosis patients by retrospective review of medical records and telephone surveys. Results: Out of 321 newly diagnosed tuberculosis cases, a total of 253 patients who received telephone surveys were enrolled in this study. Less than 50% of the patients had household contacts screened for tuberculosis infection, and most of the patients were not aware of the necessity of testing. Out of 562 household contacts, there were 8 cases of secondary tuberculosis (1.4%, 8/562) in 7 households. There were 15 cases of latent infection (2.7%, 15/562) in 13 households. Out of 110 child and adolescent household contacts, there were no cases of secondary tuberculosis, and there were 8 cases of latent infection (7.3%) in 7 households, which was 20.5% among child and adolescent contacts screened for tuberculosis infection. In 3 of the cases (13.0%) that had secondary tuberculosis or latent infection in their households, the source of infection was extrapulmonary tuberculosis. There was no correlation between the frequency of household infections and the presence of pulmonary cavities, sputum AFB smear results, and microbiologically confirmed results. Conclusions: For effective investigation of tuberculosis contacts, it is necessary to raise general awareness on the necessity of investigating household contacts, and there should also be a continued assessment on tuberculosis contact investigation since government-supported programs.

목적: 결핵 전파의 주요 원인인 가족 내 2차 감염 관리의 실태를 조사하고 특히 18세 이하 소아청소년에서의 결핵 노출 시의 관리 실태를 분석하는 것이다. 방법: 2011년 10월 1일부터 2012년 9월 30일까지 가천대 길병원에서 결핵균 감염에 의한 질환으로 치료받은 환자들을 대상으로 진단을 받은 시기로부터 1년이 지난 시점에 후향적으로 전화 설문 및 의무 기록을 조사하였다. 결과: 총 321명의 연구 대상자들 중 전화 응답이 가능했던 253명의 새로 진단된 결핵 환자들 중에서 가족 접촉자에 대한 결핵 감염 여부를 확인하기 위해 검사를 받은 경우는 50% 미만 밖에 되지 않았고, 검사의 필요성에 대한 인식이 부족한 경우가 많았다. 총 562명의 가족 내 접촉자 중 2차 환자가 발생한 경우는 7가족 내 8명(1.4%, 8/562)이었고, 가족 내 잠복결핵감염 환자가 발생한 경우는 13가족 내 15명(2.7%, 15/562)이었다. 가족 내 소아 청소년 접촉자 110명 중 2차 환자는 없었으며 잠복결핵감염은 7가족 내 8명으로 전체 소아 청소년 접촉자 중에는 7.3%, 검진을 받은 소아 청소년 접촉자 중에는 20.5%였다. 가족 내에 추가 환자 및 잠복결핵감염자 중 감염원이 폐외 결핵인 경우가 3명(13.0%)이 있었다. 감염원의 폐공동 존재 여부와 객담 도말 검사 결과 및 미생물학적 확진 여부는 가족 내 접촉자의 감염 여부와는 상관 관계가 없었다. 결론: 효과적인 결핵 접촉자 검진을 위해서 환자의 가족 내 접촉자 검진에 대한 인식의 개선이 필요하며 결핵 접촉자 검진 국가 지원 사업 이후 관리 실태 개선 여부에 대한 평가를 위해 지속적인 조사가 필요하다.

Keywords

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