<abstract xmlns="http://www.w3.org/1999/xhtml"><p>An integrated epidemiological study of <italic>Opisthorchis viverrini</italic> consisting of risk factors analysis and parasitation prevalence determination in humans, as well as the assessment the roles of host reservoirs (dogs and cats) and intermediate hosts (cyprinid fish) was carried out in the vicinity of Huay Luang dam, Udon Thani province, in the north east of Thailand. The survey was conducted from June 2014 to July 2016 in three sub-districts. Fecal samples were collected from 5,347 participants in 22 villages and the overall prevalence of <italic>O. viverrini</italic> was found to be 31.5 %. Risk factors for liver fluke infection were determined from questionnaires analysis which sought demographic data and information about the eating behaviors of the participants. The behavior of raw fish consumption correlated significantly with parasitation in the studied areas. The risk factors for <italic>O. viverrini</italic> infection in humans were associated significantly with age, education, and habitation within a two kilometer range from nearby water and food sources. Questionnaires showed that the drug treatments were not always appropriate. The stools of domestic dogs (n = 468) and cats (n = 262) collected for parasitological analysis and results showed that the zoonotic role of dogs should not be underestimated as has been done previously/in past. The incidence of <italic>O. viverrini</italic> metacercariae in four cyprinid fishes <italic>Barbonymus gonionotus</italic> (n = 124), <italic>Cyclocheilichthys repasson</italic> (n = 843), <italic>Hampala dispar</italic> (n = 276) and <italic>Henicorhynchus siamensis</italic> n = 946), were determined and overall values ranged from 2.4 % to 23.1 %. There was a seasonal variation in metacercariae intensity which ranged from 1 – 125 metacercariae per fish. The study concluded that transmission ecology should be taken into consideration in developing of control strategies against opisthorchiasis.</p></abstract>

An integrated epidemiological study of Opisthorchis viverrini consisting of risk factors analysis and parasitation prevalence determination in humans, as well as the assessment the roles of host reservoirs (dogs and cats) and intermediate hosts (cyprinid fish) was carried out in the vicinity of Huay Luang dam, Udon Thani province, in the north east of Thailand. The survey was conducted from June 2014 to July 2016 in three sub-districts. Fecal samples were collected from 5,347 participants in 22 villages and the overall prevalence of O. viverrini was found to be 31.5 %. Risk factors for liver fluke infection were determined from questionnaires analysis which sought demographic data and information about the eating behaviors of the participants. The behavior of raw fish consumption correlated significantly with parasitation in the studied areas. The risk factors for O. viverrini infection in humans were associated significantly with age, education, and habitation within a two kilometer range from nearby water and food sources. Questionnaires showed that the drug treatments were not always appropriate. The stools of domestic dogs (n = 468) and cats (n = 262) collected for parasitological analysis and results showed that the zoonotic role of dogs should not be underestimated as has been done previously/in past. The incidence of O. viverrini metacercariae in four cyprinid fishes Barbonymus gonionotus (n = 124), Cyclocheilichthys repasson (n = 843), Hampala dispar (n = 276) and Henicorhynchus siamensis n = 946), were determined and overall values ranged from 2.4 % to 23.1 %. There was a seasonal variation in metacercariae intensity which ranged from 1 – 125 metacercariae per fish. The study concluded that transmission ecology should be taken into consideration in developing of control strategies against opisthorchiasis.

Epidemiology of <italic>Opisthorchis viverrini</italic> in an endemic area of Thailand, an integrative approach

Liver Fluke Research and Academic Outreach Unit, Faculty of Science

Department of Biology, Faculty of Science

Helminthologia

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Epidemiology of  in an endemic area of Thailand, an integrative approach

An integrated epidemiological study of Opisthorchis viverrini consisting of risk factors analysis and parasitation prevalence determination in humans, as well...

Epidemiology of Opisthorchis viverrini in an endemic area of Thailand, an integrative approach

Publié en ligne: 01 nov. 2017

Pages: 298 - 306

Reçu: 11 avr. 2017

Accepté: 06 juil. 2017

DOI: https://doi.org/10.1515/helm-2017-0036

Mots clés
cholangiocarcinoma, epidemiology, reservoirs, intermediate host

© 2017 S. Prakobwong et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Epidemiology of Opisthorchis viverrini in an endemic area of Thailand, an integrative approach

Publié en ligne: 01 nov. 2017

Pages: 298 - 306

Reçu: 11 avr. 2017

Accepté: 06 juil. 2017

DOI: https://doi.org/10.1515/helm-2017-0036

Mots cléscholangiocarcinoma, epidemiology, reservoirs, intermediate host

© 2017 S. Prakobwong et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
cholangiocarcinoma, epidemiology, reservoirs, intermediate host