Swimmer’s itch /diseases-conditions/swimmers-itch/home/ovc-20273250 Clinical Microbiology Reviews, 28 (1), 165-190 Avian schistosomes and outbreaks of cercarial dermatitis. Horák, P., Mikeš, L., Lichtenbergová, L.
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Parasites - Cercarial dermatitis (also known as swimmer’s itch) cdc.gov/parasites/swimmersitch/biology.html
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There are few statistics kept on its occurrence. Swimmer’s itch is a common summer ailment around the world. What’s the outlook for cercarial dermatitis? If you swim or wade in infested water, some of these parasitic worms may mistakenly land on your skin. These larvae live only for about 24 hours and hunt for a proper host to continue their life cycle. These tiny larvae, known as cercariae, swim around looking for waterfowl or water animals to begin the cycle again. After the parasite infects the snail and develops in it, the snail excretes a second form of parasitic larvae into the water. When the parasite’s eggs hatch in the water, the larvae swim around trying to find their second host, a species of snail. The birds or animals then pass the eggs of the parasite into the water through their feces. In its life cycle, the parasitic worm infects the blood of waterfowl and some animals that live near the water. You just happen to be there swimming or wading when the parasite, in its infective stage, is searching for its natural host. Its normal life cycle is from waterfowl or water animal to snail and back again.
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It accidently attaches to you and other humans while it’s looking for a water bird or another animal host. Cercarial dermatitis is caused by a parasitic worm that burrows into your skin.