07/01/2024
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Thelazia callipaeda is a spirurid of dogs, which can also be found in cats and wildlife such as foxes and hares.
๐ชฑThis parasite is transmitted by secretophagous fliesflies, which is a fruit fly that feeds on lachrymal secretions of mammals. It is zoonotic.
๐ชฑThelazia callipaeda has been reported in several parts of Europe and Asia,
๐ชฑincluding China, India, Bangladesh, Myanmar, Indonesia, Japan, Korea, Taiwan, and Thailand.
Clinical signs
๐จIn most cases, T. callipaeda infection in dogs is asymptomatic, but clinical signs may include mild conjunctivitis, blepharitis, epiphora, periocular pruritus and, in severe cases, corneal oedema and keratitis (Fig 1).
๐จBlindness may eventually occur in severe cases that are left untreated.
Diagnosis
๐ฌDiagnosis is achieved by visual inspection and retrieval of adult worms in the eye of infected hosts.
๐ฌFirst-stage larvae of the parasite may also be found in ocular secretions.
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