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Abstract

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Article in Japanese

Original Article

Assesment of environmental risk factors for nontuberculousis mycobacteria disease in southern Ibaraki Prefecture in Japan

Yuka Mishimaa,b  Tomoyuki Ogatab  Hiroaki Kobayashib  Reina Imaseb  Tamon Yagib,d  Hiroaki Saitoc,d  Takaaki Yamashitab,c  Kazuhito Saitoc  Toshihide Fujied  Naohiko Inased 

aDepartment of Respiratory Medicine, Ome Municipal General Hospital
bDepartment of Respiratory Medicine, JA Toride Medical Center
cDepartment of Respiratory Medicine, Tsuchiura Kyodo General Hospital
dDepartment of Respiratory Medicine, Tokyo Medical and Dental University

ABSTRACT

Nontuberculous mycobacteria (NTM) inhabit human living environments, especially in soil and water. We examined the effect of exposure to soil and well water usage on Mycobacterium avium-intracellulare complex (MAC) infection in southern Ibaraki Prefecture. In 128 patients with MAC pulmonary disease (30 men, 98 women, 69.6±9.4 years), 26 patients (20%) were exposed to soil more than twice a week, 10 patients (8%) used well water, and 22 patients (17%) experienced both. Mycobacterium intracellulare were frequently detected from patients with exposure to soil and well water usage. Multivariate analysis showed that exposure to soil (odds ratio 3.09, p=0.016) was an independent risk factor of M. intracellulare infection, and the odds ratio of well water usage was 2.48 (p=0.073).

KEYWORDS

Non-tuberculous mycobacteria  Soil exposure  Well water 

Received 4 Jun 2016 / Accepted 6 Jan 2017

AJRS, 6(3): 129-135, 2017

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