James Mahaffy wrote:
>> Apologies if this is too practical a question, but I would like
> to help my town lick a problem with Schistosoma. We have a
> small (1.3 million gallons) 2 « acres 19 foot deep swimming hole
> (old sand quarry) here in North West Iowa. This year, for the
> first time, about 10 kids have come down with classic symptoms of
> swimmers itch. Although this is a very small percentage of the
> swimmers, I would appreciate suggestions on some ways to solve
> the problem and let campers let their kids swim. There were a
> few more waterfowl (mallards and a few Canadian Geese) than
> normal that visited earlier in the Spring. There are no water
> fowl resident right now.
>> Is there a way to cut down on the snail carriers? How far do the
> cercaria swim? I suggested removing algae from the sandy area.
> Will copper sulphate solve the problem? I suspect being sure to
> shower and towel afterwards helps but that does not solve the
>> Appreciate any feedback.
> James F. Mahaffy e-mail: mahaffy at dordt.edu> Biology Department phone: 712 722-6279
> Dordt College FAX 712 722-1198
> Sioux Center, Iowa 51250
there is no reason to apologize concerning your question. This kind of
questions was one of the reasons for us to establish this newsgroup and I would
appreciate if more members of this newsgroup would participate in this way.
Recently, Ken Mott from the WHO has send a message to this newsgroup
concerning a new WEB PAGE that has been installed on cercarial dermatitis at:
http://www.aquatica.com at which he wrote a section concerning your problem. I
cannot remember details of this page but perhaps it could be of interest to you.
Genetische Parasitologie des
Instituts fuer Genetik der
Fax : 49-211-81-12333
Fax : 49-211-81-12279
e-mail: Christoph.Grevelding at uni-duesseldorf.de