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Colonization and risk factors for Brachyspira aalborgi and Brachyspira pilosicoli in humans and dogs on tea estates in Assam, India

Published online by Cambridge University Press:  27 January 2004

M. A. MUNSHI ,
R. J. TRAUB ,
I. D. ROBERTSON ,
A. S. J. MIKOSZA  and
D. J. HAMPSON
M. A. MUNSHI
Affiliation:
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
R. J. TRAUB
Affiliation:
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
I. D. ROBERTSON
Affiliation:
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
A. S. J. MIKOSZA
Affiliation:
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
D. J. HAMPSON
Affiliation:
School of Veterinary and Biomedical Sciences, Murdoch University, Murdoch, Western Australia 6150, Australia
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Abstract

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The prevalence of colonization with the anaerobic intestinal spirochaetes Brachyspira aalborgi and Brachyspira pilosicoli was investigated in humans (n=316) and dogs (n=101) living on three tea estates in Assam, India. Colonization was detected using PCR on DNA from faeces. Nineteen (6%) human faecal samples contained B. aalborgi DNA, 80 (25·3%) contained B. pilosicoli DNA, and 10 (3·2%) contained DNA from both species. One canine sample contained DNA from B. pilosicoli. Significant factors for B. aalborgi colonization in logistic regression were: infection of family members with B. aalborgi (P<0·001), being a resident of Balipara (P=0·03), and use of water treatment (P=0·03). For B. pilosicoli, significant factors were: other family members being positive for B. pilosicoli (P<0·001), water obtained from a well (P=0·006), water treatment (P=0·03), and not having visited a doctor in the previous 12 months (P=0·03).

Type
Research Article
Information
Epidemiology & Infection , Volume 132 , Issue 1 , February 2004 , pp. 137 - 144
Copyright
© 2004 Cambridge University Press