Abstract
Opisthorchis viverrini infection is a serious public-health problem in Southeast Asia. It is associated with a number of hepatobiliary diseases and the evidence strongly indicates that liver fluke infection is the etiology of cholangiocarcinoma. This study aimed to investigate Opisthorchis viverrini metacercarial infection in cyprinoid fish collected from 32 districts of Nakhon Ratchasima province, Northeastern Thailand during one year period from February 2010 to February 2011. A cross-sectional study was conducted, data being collected with pepsin-HCl digestion and stereomicroscope, respectively. Analysis was performed using SPSS Windows Version 12.0. A total of 640 Cyprinidae family fish including 5 species were collected from different study sites, and investigated for O. viverrini metacercariae. The infection rate was 12.3% (79/640), predominantly in Cyclocheilichthys armatus, C. repasson, Puntioplites proctzysron, Hampala macrolepitota and Hampala dispar, respectively. The prevalence of O. viverrini metaceria in Nakhon Ratchasima area was 78.1%, predominantly in Sida and KiaKham Thale So. This findings stress that natural fish species in rural communities are still a source of O viverrini infection and put local people at risk, therefore public awareness and prevention campaigns are urgently required.
Highlights
Opisthorchis viverrini, fish-borne trematode infection causes a serious public-health problem in Southeast Asia mainly Thailand, Cambodia, and Laos PDR
This study aimed to investigate Opisthorchis viverrini metacercarial infection in cyprinoid fish collected from 32 districts of Nakhon Ratchasima province, Northeastern Thailand during one year period from February 2010 to February 2011
In Thailand, opisthorchiasis is a major public health problem in the Northeastern and Northern region, and it is estimated that 5.5 million people are infected with the causative parasite (Sripa et al, 2010)
Summary
Opisthorchis viverrini, fish-borne trematode infection causes a serious public-health problem in Southeast Asia mainly Thailand, Cambodia, and Laos PDR. In Thailand, opisthorchiasis is a major public health problem in the Northeastern and Northern region, and it is estimated that 5.5 million people are infected with the causative parasite (Sripa et al, 2010). Opisthorchis viverrini infection is a serious public-health problem in Southeast Asia. It is associated with a number of hepatobiliary diseases and the evidence strongly indicates that liver fluke infection is the etiology of cholangiocarcinoma. Objectives: This study aimed to investigate Opisthorchis viverrini metacercarial infection in cyprinoid fish collected from 32 districts of Nakhon Ratchasima province, Northeastern Thailand during one year period from February 2010 to February 2011. Conclusion: This findings stress that natural fish species in rural communities are still a source of O viverrini infection and put local people at risk, public awareness and prevention campaigns are urgently required
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