A case of Thelazia callipaeda (Spirurida, Thelaziidae) in a dog from Karnataka – First report

Thelazia callipaeda is a parasitic nematode and the most common cause of “thelaziosis” (oriental eye worm infestation) in dogs, cats and humans. Animals living in unhygienic conditions are at greater risk of thelaziosis. The present case was reported from a two-year-old German shepherd dog. The worms appeared creamy/white in colour, ranging from 9 to 12 mm in length, and had tapering ends. The parasites were removed under general anaesthesia. Based on morphometrics, they were identified as T. callipaeda. This is the first case reported in dogs from Karnataka and fourth case reported from India. These eyeworms are emerging as multi-host parasites with zoonotic potential in different parts of the world. These worms need to be identified and reported in the health care system to determine its prevalence and endemicity and to take necessary preventive measures.