Abstract:
:Residents of the Red River Delta region of northern Vietnam have a long tradition of eating raw fish. Fish-borne zoonotic trematodes (FZTs) are estimated to infect ≈1 million persons in Vietnam. It remains uncertain at what stages in the aquaculture production cycle fish become infected with FZTs. Newly hatched fish (fry) from 8 hatcheries and juveniles from 27 nurseries were therefore examined for FZT infection. No FZTs were found in fry from hatcheries. In nurseries, FZT prevalence in juveniles was 14.1%, 48.6%, and 57.8% after 1 week, 4 weeks, and when overwintered in ponds, respectively. FZT prevalence was higher in grass carp (p<0.001) than in other carp species. Results show that nurseries are hot spots for FZT infections in fish. Thus, sustainable FZT prevention strategies must address aquaculture management practices, particularly in nurseries, to minimize the risk of distributing infected juveniles to grow-out ponds and, subsequently, to markets for human consumption.
journal_name
Emerg Infect Disjournal_title
Emerging infectious diseasesauthors
Phan VT,Ersbøll AK,Nguyen TT,Nguyen KV,Nguyen HT,Murrell D,Dalsgaard Adoi
10.3201/eid1612.100422subject
Has Abstractpub_date
2010-12-01 00:00:00pages
1905-9issue
12eissn
1080-6040issn
1080-6059journal_volume
16pub_type
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