Human dirofilariasis due to dirofilaria repens in Ahvaz-Iran: a report of three cases

ABSTRACT

Zoonotic filariasis due to Dirofilaria repens is prevalent in several regions of the world and because of recent rise in the number of human infections in countries of Europe, Africa and Asia, it is considered an emerging zoonoses in these continents. In 2002 three cases of dirofilariasis were diagnosed. The first case was a 34 year old man from Ahvaz referred to dermatologist with a nodule on the right cheek. During the excisional biopsy an adult dirofilaria measured 120 mm in length with white color was removed. The second case was a 37 year old man from a village around Ahvaz city who noticed a single moveable nodule with itching, irritation and swelling, 1.5 cm in diameter on his chest. The patient pressed the nodule and a white worm with 130 mm in length was revealed. The third case was a 35 year old man from Ahvaz presented at Imam Khomeini hospital because of eye irritation with symptoms and signs of itching, swelling and redness of the right eye. Examination noticed a living worm with the length of 110 mm which removed from the subconjunctival space. The worms were examined in parasitology department and based on morphological characters and microscopical identified as Dirofilaria repens. This is the second report of subcutaneous and the first report of subconjunctival dirofilariasis from Iran