By one author's count, 257 human cases of Thelazia callipaeda had been reported worldwide by the year 2000, though<unk>  is still considered to be a rare disease. Various livestock and wildlife surveys suggest that<unk>  is quite common among animals. *A slaughterhouse survey in Canada found that about one-third (32%) of cattle over an eight-month period were infested with eyeworms. *A survey of horses in Kentucky revealed a 42% rate of infestation with Thelazia lacrymalis. *In Wyoming and Utah, a survey of hunter-harvested mule deer found 15% to be infested by Thelazia californiensis. *A survey of various sites in Italy found 23-60% of dogs, 5% of foxes and 4 out of 4 cats to be infested with Thelazia callipaeda. *In a study of dogs living in western Spain, 39.9% of the dogs were found to have Thelazia callipaeda worms living in their eyes.
Thelaziasis
Necatoriasis
Paragonimiasis
Isosporiasis
Metagonimiasis
Helminthiasis
Scarabiasis
Naegleriasis