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Year : 2021  |  Volume : 11  |  Issue : 2  |  Page : 125-127

The first case report of subcutaneous dirofilariasis caused by Dirofilaria repens in Thailand

1 Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
2 The Office of Disease Prevention and Control 5th, Ratchaburi, Thailand
3 Kanchanaburi Provincial Public Health Office, Kanchanaburi, Thailand
4 Division of Vector Borne Disease, Department of Disease Control, Ministry of Public Health, Nonthaburi, Thailand

Correspondence Address:
Patsharaporn Techasintana Sarasombath
Department of Parasitology, Faculty of Medicine Siriraj Hospital, Mahidol University, Adulyadejvikrom Building, 7th Floor, 2 Wanglang Road, Bangkoknoi, Bangkok 10700
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/tp.TP_113_20

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Dirofilariasis is a rare zoonotic disease which is commonly caused by two Dirofilaria species; Dirofilaria immitis and Dirofilaria repens. Humans are accidental dead-end hosts of the parasites, and the infection is mainly asymptomatic. Here, we report the case of a 54-year-old Thai woman who experienced a painful left shoulder nodule and eosinophilia for 1 month. An excisional biopsy of the nodule revealed a degenerated filarial nematode compatible with adult females of the Dirofilaria species. Molecular identification of the partial 12 mt rRNA gene of the worm confirmed that the causative species was D. repens, a zoonotic filariasis that causes subcutaneous dirofilariasis in dogs and cats. To the best of our knowledge, this was the first reported case of subcutaneous dirofilariasis caused by D. repens in Thailand. This increased concerns about zoonotic filariasis from natural animal reservoirs in Thailand.

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