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A review of human sparganosis in Thailand
1Department of Laboratory Medicine, Faculty of Medicine, Chulalongkorn University, Bangkok 10330, Thailand. wviroj@yahoo.com
Background:
Sparganosis is a zoonosis that occurs occasionally in humans. The infection is reported in many countries but is most common in eastern Asia. In Thailand, a southeast Asian country, the infection is sporadic.
Design:
In this study the clinical presentations of human sparganosis cases in Thailand were investigated by means of a literature review.
Results:
Reports of 34 cases of sparganosis were found. The infections were ocular (17 cases), subcutaneous (ten cases), central nervous system (five cases), auricular (one case), pulmonary (one case), intraosseous (one case) and intraperitoneal (one case). Of these 34 cases, 14 had risk behaviour reported, 12 had a history of drinking impure water, five had a history of eating frog or snake meat and two had a history of using frog or snake meat as a poultice. Some cases had more than one risk factor.
Conclusion:
Most cases of sparganosis in Thailand presented with superficial ocular mass lesions. The major risk behaviour in Thailand is drinking water contaminated with the infective organism. Some cases of serious deep visceral sparganosis have also been reported.
Insights
Human sparganosis, a zoonotic infection, is sporadic in Thailand. Most cases present as superficial ocular lesions, with contaminated water being the primary risk factor.
Area of Science:
- Parasitology
- Infectious Diseases
- Tropical Medicine
Background:
- Sparganosis is a zoonotic parasitic infection occasionally seen in humans.
- It is reported globally but is most prevalent in East Asia.
- In Thailand, sparganosis cases are sporadic.
Purpose of the Study:
- To investigate the clinical presentations of human sparganosis cases in Thailand.
- To identify common risk factors associated with sparganosis in the region.
Main Methods:
- A comprehensive literature review was conducted.
- Clinical data from reported human sparganosis cases in Thailand were analyzed.
Main Results:
- Thirty-four cases of human sparganosis were identified.
- Ocular (17 cases) and subcutaneous (10 cases) infections were most common.
- Drinking contaminated water was the major reported risk behavior.
Conclusions:
- Superficial ocular mass lesions are the most frequent presentation of sparganosis in Thailand.
- Contaminated water consumption is the primary risk factor.
- Deep visceral and central nervous system sparganosis cases, though less common, have been reported.
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