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Volume 16, Number 12—December 2010


Freshwater Aquaculture Nurseries and Infection of Fish with Zoonotic Trematodes, Vietnam

Van Thi PhanComments to Author , Annette Kjær Ersbøll, Thanh Thi Nguyen, Khue Viet Nguyen, Ha Thi Nguyen, Darwin Murrell, and Anders Dalsgaard
Author affiliations: Author affiliations: Research Institute for Aquaculture No.1, Bac Ninh, Vietnam (V.T. Phan, K.V. Nguyen, H.T. Nguyen); University of Southern Denmark, Odense, Denmark (A.K. Ersbøll); Vinh University, Vinh, Vietnam (T.T. Nguyen); University of Copenhagen, Copenhagen, Denmark; (V.T. Phan, D. Murrell, A. Dalsgaard)

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Table 3

Logistic regression analyses of fishborne zoonotic trematode prevalence found in different fish species and nursery systems in Nam Dinh and Ninh Binh provinces, northern Vietnam*

Variable Estimate† SE OR (95% CI) p value

Province 0.0123
Nam Dinh 1.026 0.3803 0.359 (0.164–0.785)
Ninh Binh‡


Fish <0.0001
Grass carp 1.794 0.1668 6.013 (4.336–8.340)
Silver carp 0.284 0.1558 1.329 (0.979–1.804)
Mrigal 0.032 0.2260 1.033 (0.663–1.609)


Culture system <0.0001
1-week-old juveniles‡ 0 1
4-week-old juveniles 1.194 0.1485 3.299 (2.465–4.414)
Overwintered juveniles 2.552 0.1684 12.831 (9.222–17.852)

*OR, odds ratio; CI, confidence interval.
†Parameter estimate of variables in the resulting model.

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