Autor: |
Laoprom N; Department of General Science, Faculty of Science and Engineering, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, 47000, Thailand., Prathummang S; Hue Phon Health Promotion Hospital, Mueang Nakhon Phanom, Nakhon Phanom, 48000, Thailand., Chuangchaiya S; Department of Community Health, Faculty of Public Health, Kasetsart University, Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, 47000, Thailand., Navanesan S; Secretariat for Medical Research and Innovation, Faculty of Medicine, Universiti Kebangsaan Malaysia, 56000 Cheras, Kuala Lumpur, Malaysia., Munajat MB; Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti, Kebangsaan Malaysia, 56000 Cheras, Kuala Lumpur, Malaysia., Suwannatrai AT; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand., Idris ZM; Department of Parasitology and Medical Entomology, Faculty of Medicine, Universiti, Kebangsaan Malaysia, 56000 Cheras, Kuala Lumpur, Malaysia. |
Abstrakt: |
Opisthorchiasis is endemic in parts of Southeast Asia, including the northern and northeastern regions of Thailand. In these regions, the transmission by fish intermediate hosts has received little attention. We investigated the intensity of Opisthorchis viverrini metacercariae (OV MC) in wild cyprinid fishes from five districts within the Nakhon Phanom Province, Northeast Thailand. Fishes were procured from local markets in five districts throughout three different seasons (hot, rainy and cold) between February 2018 and January 2019. The samples were identified, counted and weighed before metacercariae detection was performed via the artificial digestion method. A total of 2,149 freshwater fishes, representing 20 species were collected. The fish most commonly contaminated with OV MC were Anematichthys repasson and Hampala dispar. The intensity of OV MC in Nakhon Phanom was 0.23 OV MC/fish and varied among districts, ranging from 0.07 to 0.52. A low intensity of OV MC/fish (defined as <=1 cyst) was found in all three different seasons in the Nakhon Phanom Province; hot season (0.55), cold season (0.22) and the rainy season (0.13). The intensity of OV MC/fish was moderate (defined as >1 cyst) in the Renu Nakhon district (2.5) in the hot season. By fish species, H. dispar yielded the highest, with a moderate intensity of 2.1. In natural freshwater cyprinid fish in Nakhon Phanom, OV MC infection is endemic with intensity rates varying according to district, season and fish species. |