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Volume 15, Number 4—April 2009


Animal Reservoir Hosts and Fish-borne Zoonotic Trematode Infections on Fish Farms, Vietnam

Nguyen Thi Lan AnhComments to Author , Nguyen Thi Phuong, K. Darwin Murrell, Maria Vang Johansen, Anders Dalsgaard, Luong To Thu, Tran Thi Kim Chi, and Stig Milan Thamsborg
Author affiliations: National Institute of Veterinary Research, Hanoi, Vietnam (N.T.L. Anh, N.T. Phuong, L.T. Thu); University of Copenhagen, Copenhagen, Denmark (N.T.L. Anh, D. Murrell, M. Vang Johansen, A. Dalsgaard, S.M. Thamsborg); Research Institute for Aquaculture I, Tu Son, Bắc Ninh, Vietnam (T.T.K. Chi)

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Table 3

Risk factors for fish-borne zoonotic trematodes infection in domestic animals, Nghe An Province, Vietnam, November 2005*

Variable No. samples Univariable analysis
Crude OR 95% CI p value
Animal species† <0.001
Dogs 80 3.3 1.6–6.6
Cats 35 5.7 2.5–13.5

Age, mo
<12 174 1.2 0.6–2.3 0.64

Free-roaming 0.0001
Always 117 0.6 0.4–0.8
Sometimes 4 Inf

Fed raw fish
Sometimes 91 1.9 1.0–3.4 0.04

Eats raw fish
Sometimes 158 4.0 2.2–7.5 <0.0001
Never 71 1

*Data from all dogs, cats, and pigs were analyzed. OR, odds ratio; CI, confidence interval; Inf, infinity.
†Multivariable analysis showed an interaction only between animal species and feeding raw fish; p = 0.02.

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