Aravaipa puzzle

[J-F Magnaval]

Sylvester O'Farrell wrote:
> 
>     My friend hiked Aravaipa Canyon, AZ, which involved wading upstream.
> Afterwards, she and her friend found themselves to have an itchy rash
> over the body, which they took to be insect bites, numbering perhaps 60.
>  However, over the next few days,  other "bites" continued to appear.
> 
>     Does anyone recognise this effect ?
> 
> --
> Sylvester O'Farrell 70642.2703 at compuserve.com
> 08/15/96 12:23
> [ Standard Disclaimer ]This sounds like water-itches, due to the infection of Man by cercariae 
(larvae) of birds' blood-flukes. Since Man is not a correct host for 
these worms, larvae cannot growth into the paratized human subjects.
The only treatment to use is symptomatic, maybe with a balm containing 
10% of crotamiton (European brand name: Eurax).

-- 
Jean-François Magnaval, M.D., Dr.Sc..
Lab. Parasitologie
CHU Purpan
31059 Toulouse France
Phone 33 61 77 20 12
Fax   33 61 77 23 78