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Atcharaphan Wanlop,Chalobol Wongsawad,Pongphol Prattapong,Pheravut Wongsawad,Thapana Chontananarth,Jong-Yil Chai 대한기생충학열대의학회 2017 The Korean Journal of Parasitology Vol.55 No.4
The prevalence of Centrocestus formosanus metacercariae was investigated in ornamental fish purchased from a pet shop in Chiang Mai, Thailand, including Carassius auratus (goldfish), Cyprinus carpio (Koi), Poecilia latipinna (Sailfin Molly), Danio rerio (Zebrafish), and Puntigrus tetrazona (Tiger barb). The parasite species was identified by the morphology of worms as well as by a molecular approach using ITS2. The results showed that 50 (33.3%) of 150 fish examined were infected with the metacercariae. The highest prevalence was found in C. auratus (83.3%), and the highest intensity was noted in C. carpio (70.8 metacercariae/fish). The most important morphological character was the presence of 32-34 circumoral spines on the oral sucker. The phylogenetic studies using the rRNA ITS2 region revealed that all the specimens of C. formosanus in this study were grouped together with C. formosanus in GenBank database. This is the first report on ornamental fish, C. carpio, P. latipinna, D. rerio, and P. tetrazona, taking the role of second intermediate hosts of C. formosa-nus in Thailand. Prevention and control of metacercarial infection in ornamental fish is urgently needed.
Cold Exposure and Health Effects Among Frozen Food Processing Workers in Eastern Thailand
Anamai Thetkathuek,Tanongsak Yingratanasuk,Wanlop Jaidee,Wiwat Ekburanawat 한국산업안전보건공단 산업안전보건연구원 2015 Safety and health at work Vol.6 No.1
Frozen food processing workers work under a cold environment which can cause several adverse healtheffects.This study explored factors affecting workers’ health in the frozen food industry in Thailand. Participants comprised 497 workers exposed to a cold working environment and 255 office workers whoserved as the controls. Data were collected by a survey on the work environment, and the interview of workers for abnormalsymptoms. The exposed group had the following characteristics: 52.7% male, overall average age of 27(SD 6.6) years old, attained elementary education (Grade 4 and Grade 6) (54.1%), married (48.9%),smokers (21.3%), alcohol consumption (31.0%), duration of work was between 1 and 5 years (65.2%),working 6 days a week (82.7%), 1e5 hours of overtime per week (33.8%), office workers (33.9%); workcategory: sizing (6.9%), peeling (28.3%) dissecting (22.2%), and in the warehouse (8.6%). The temperaturein the work environment ranged from 17.2?C to 19.2?C in most sections, ?18.0?C in the warehouse, and25?C in the office areas. Warehouse workers had more abnormal symptoms than controls includingrepeated pain in the musculoskeletal system (OR 11.9; 95% CI 6.12e23.45), disturbance throughout thebody (OR 4.60; 95% CI 2.00e10.56), respiratory symptoms (OR 9.73; 95% CI 3.53e26.80), episodic fingersymptoms (OR 13.51; 95% CI 5.17e35.33). The study results suggest that workers’ health should be monitored especially with regard to back andmuscle pain, respiratory symptoms, episodic finger symptoms, and cardiovascular symptoms. Healthpromotion campaigns such as antismoking and reduction of alcohol consumption should be establishedbecause smoking and alcohol consumption are contributing factors to the pathogenesis of Raynaud’sphenomenon and peripheral vascular disorders such as hypertension and heart disease.