TRANSMISSION OF MYCOBACTERIUM TUBERCULOSIS TO HOUSEHOLDS OF TUBERCULOSIS PATIENTS: A COMPREHENSIVE CONTACT TRACING STUDY

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KHALILZADEH S.; MASJEDI H.; HOSSEINI M.; SAFAVI ARASH; MASJEDI M.R.

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Journal: ARCHIVES OF IRANIAN MEDICINE Year:2006 | Volume:9 | Issue:3 Page(s): 208-212

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Title

TRANSMISSION OF MYCOBACTERIUM TUBERCULOSIS TO HOUSEHOLDS OF TUBERCULOSIS PATIENTS: A COMPREHENSIVE CONTACT TRACING STUDY

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Keywords

CONTACT TRACING

TRANSMISSION

TUBERCULOSIS

Abstract

Background: TUBERCULOSIS (TB) continues to be a major health problem in developing countries. Contact investigation is the most appropriate strategy to interrupt TRANSMISSION and subsequent development of TB. Methods: This cross-sectional study was conducted to assess the impact of contact screening on case-finding by using tuberculin skin test chest radiography. Contacts of smear-positive patients with pulmonary TB (index cases) were diagnosed and registered in our center during 2002 – 2004. Contacts, defined as household members living with index cases for >30 days, were screened by sputum examination, tuberculin skin test, and chest radiography. Results: Sixty-eight patients with smear-positive pulmonary TB were considered as index cases. A total of 224 close contacts with index cases (an average of 3 contacts for each index case) were detected. Age among contacts ranged from 6 months to 74 years. Eighty-three percent of contacts were Iranians and 17% were Afghans. Abnormal radiographs were seen in 49.6% of contacts. Sixteen point five percent of contacts had a positive tuberculin skin test of >10 mm; 7.6% had a positive sputum smear. The mean ± SD age of Iranian contacts (29.1 ± 16.6 years) was significantly (P < 0.001) higher than that of Afghans (18.6 ± 14.1 years). Cavitary formation, nodular pattern, and infiltration were found to have a strong association with a positive sputum smear for acid fast bacilli (100%, 100%, and 87%, respectively). Conclusion: The rate of TB in contacts was higher than other similar studies. Earlier detection and treatment of adults with TB could interrupt TRANSMISSION and be a step towards eliminating childhood TB. Contact control and source-case investigations should be emphasized for TB control. Novel strategies are needed to maximize the number of contacts who are not only identified and evaluated, but also completely treated.

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APA: Copy

KHALILZADEH, S., MASJEDI, H., HOSSEINI, M., SAFAVI, ARASH, & MASJEDI, M.R.. (2006). TRANSMISSION OF MYCOBACTERIUM TUBERCULOSIS TO HOUSEHOLDS OF TUBERCULOSIS PATIENTS: A COMPREHENSIVE CONTACT TRACING STUDY. ARCHIVES OF IRANIAN MEDICINE, 9(3), 208-212. SID. https://sid.ir/paper/280116/en

Vancouver: Copy

KHALILZADEH S., MASJEDI H., HOSSEINI M., SAFAVI ARASH, MASJEDI M.R.. TRANSMISSION OF MYCOBACTERIUM TUBERCULOSIS TO HOUSEHOLDS OF TUBERCULOSIS PATIENTS: A COMPREHENSIVE CONTACT TRACING STUDY. ARCHIVES OF IRANIAN MEDICINE[Internet]. 2006;9(3):208-212. Available from: https://sid.ir/paper/280116/en

IEEE: Copy

S. KHALILZADEH, H. MASJEDI, M. HOSSEINI, ARASH SAFAVI, and M.R. MASJEDI, “TRANSMISSION OF MYCOBACTERIUM TUBERCULOSIS TO HOUSEHOLDS OF TUBERCULOSIS PATIENTS: A COMPREHENSIVE CONTACT TRACING STUDY,” ARCHIVES OF IRANIAN MEDICINE, vol. 9, no. 3, pp. 208–212, 2006, [Online]. Available: https://sid.ir/paper/280116/en

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