Is Cercarial dermatitis Contagious?
Infection and Cercarial dermatitis
Cercarial dermatitis is an infectious disease that is not transmitted from person to person.
Discussion about Contagion of Cercarial dermatitis:
parasite lives in the blood of infected animals such as ducks, geese,
gulls, swans, as well as certain aquatic mammals such as muskrats and
beavers. The parasites produce eggs that are passed in the feces of infected
birds or mammals.
If the eggs
land in the water, the water becomes contaminated. Eggs hatch, releasing
small, free-swimming larvae. These larvae swim in the water in search
of a certain species of aquatic snail.
If the larvae
find one of these snails, they infect the snail and undergo further development.
Infected snails release a different type of larvae (cercariae, hence the
name cercarial dermatitis) into the water. This larval form then searches
for a suitable host (bird, muskrat) so they can start the lifecycle over
again. Although humans are not a suitable host, the larvae burrow into
the skin of swimmers, which may cause an allergic reaction/rash. The larvae
cannot develop inside a human and they soon die. (Source: excerpt from Cercarial dermatitis: DPD)
About contagion and contagiousness:
Contagion and contagiousness refers to how easily
the spread of Cercarial dermatitis is possible from one person to another.
Other words for contagion include "infection", "infectiousness",
"transmission" or "transmissability".
Contagiousness has nothing to do with genetics
or inheriting diseases from parents.
For an overview of contagion,
see Introduction to Contagion.