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A survey of horses in Kentucky revealed a 42% rate of infestation with Thelazia lacrymalis. [14] In Wyoming and Utah, a survey of hunter-harvested mule deer found 15% to be infested by Thelazia californiensis. [15] 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. [16]
Mature horses appear to develop a certain degree of resistance to this parasite, but it is a concern for younger horses up to about two years old. [4] P. equorum is one of the few parasites where a natural immunity develops in the host. [3] However, when an infection is found in an adult horse, both the worm and egg counts are substantially low ...
Thelazia is a genus of nematode worms which parasitize the eyes and associated tissues of various bird and mammal hosts, including humans. [2] [3] They are often called "eyeworms", and infestation with Thelazia species is referred to as "thelaziasis" (occasionally spelled "thelaziosis").
Moxidectin is an anthelmintic drug used in animals to prevent or control parasitic worms , such as heartworm and intestinal worms, in dogs, cats, horses, cattle, sheep and wombats. [4] Moxidectin kills some of the most common internal and external parasites by selectively binding to a parasite's glutamate-gated chloride ion channels .
Thelazia callipaeda is a parasitic nematode, and the most common cause of thelaziasis (or eyeworm infestation) in humans, dogs and cats. [1] It was first discovered in the eyes of a dog in China in 1910. [2] By 2000, over 250 human cases had been reported in the medical literature. [3]
The esophageal worm (Spirocerca lupi) is a bright red worm that causes nodules in the esophageal wall. Male worms measure about 40 mm, and female worms are about 70 mm long. Infection occurs perorally via intermediate hosts (various dung beetles) or via paratenic hosts such as chickens, reptiles, and rodents infected by eating the beetles. The ...
Ocular larva migrans (OLM), also known as ocular toxocariasis, is the ocular form of larva migrans syndrome.It occurs when roundworm larvae invade the human eye. OLM infections in humans are caused by the larvae of Toxocara canis (dog roundworm), Toxocara cati (feline roundworm), Ascaris suum (large roundworm of pig), or Baylisascaris procyonis (raccoon roundworm).
[24] [25] [26] Further testing confirmed aminorex in human and canine urine, meaning that both humans and dogs also metabolize levamisole into aminorex, [27] though it is unclear whether plasma aminorex is present at any appreciable level. Blood samples following oral administration of levamisole out to 172 hr post-dose did not demonstrate any ...