Animal Reservoir Hosts and Fish-borne Zoonotic Trematode Infections on Fish Farms, Vietnam
Nguyen Thi Lan Anh, 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); and Research Institute for Aquaculture I, Tu Son,
Bắc Ninh, Vietnam (T.T.K. Chi)
Vol. 15, No. 4 • April 2009
| Table 2. Trematode infections in domestic animals, by trematode species, Nghe An Province, Vietnam, November 2005 | ||||
| Animal species | Trematode species |
Prevalence, %* |
Intensity of adult worms |
|
Mean ± SD† |
Maximum |
|||
| Dogs (n = 27) | Haplorchis pumilio |
92.6 |
47 ± 83 |
348 |
H. taichui |
62.9 |
28 ± 47 |
160 |
|
H. yokogawai |
25.9 |
13 ± 25 |
69 |
|
Haplorchis spp. |
62.9 |
30 ± 41 |
123 |
|
Echinochasmus japonicus |
29.6 |
38 ± 79 |
231 |
|
E. perfoliatus |
18.5 |
3 ± 3 |
9 |
|
Echinostoma cinetorchis |
3.7 |
2 |
2 |
|
Centrocestus formosanus |
11.1 |
16 ± 24 |
44 |
|
Not identified |
11.1 |
10 ± 8 |
15 |
|
All |
100 |
99 ± 201 |
924 |
|
| Cats (n = 18) | H. pumilio |
100 |
33 ± 62 |
268 |
H. taichui |
77.8 |
33 ± 94 |
357 |
|
H. yokogawai |
11.1 |
105 ± 136 |
201 |
|
Haplorchis spp. |
77.8 |
51 ± 135 |
514 |
|
E. perforliatus |
5.6 |
3 |
3 |
|
C. formosanus |
5.6 |
4 |
4 |
|
Not identified |
22.2 |
8 ± 4 |
10 |
|
All |
100 |
112 ± 309 |
1,340 |
|
| Pigs (n = 5) | H. pumilio |
100 |
5 ± 4 |
13 |
H. taichui |
60 |
2 |
2 |
|
H. yokogawai |
40 |
2 |
2 |
|
Haplorchis spp. |
100 |
12 ± 13 |
29 |
|
E. japonicus |
60 |
3 ± 3 |
6 |
|
Not identified |
60 |
13 ± 16 |
32 |
|
All |
100 |
29 ± 32 |
84 |
|
| *Based on estimation of worm burdens in animals with positive fecal egg counts. | ||||
| †SD provided only for trematode species in >1 animal. | ||||
This page posted March 20, 2009
