There's Always Something New under the "Parasitological" Sun (The Unique Story of Helminth-Borne Salmon Poisoning Disease)

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Abstract
Fluke-borne salmon poisoning disease of Pacific Coast canines is cited as an example of transmission of disease to vertebrate hosts by endoparasites, which may be of wider occurrence than is now suspected. Comparisons are made to nematode-transmitted blackhead of turkeys, and swine influenza. New information in experimental salmon poisoning disease includes data on insusceptibility of Florida and Oregon racoons, and of local fingerling trout to infectious node inoculums; on clinical and pathological symptoms in over 50 experimentally infected dogs; on average, as well as a few unexpectedly long incubation periods up to 27 and 33 days, and including one of 19 days in a dog receiving 10-6.7 dilution of the agent; on efficacy of treatment with minimal amounts of Terramycin and Aureomycin with report of one nonfatal relapse following recovery after drug administration; on recovery of infection from immature flukes in Goniobasis snails from Oregon in 2 of 5 tests; on failure to cultivate the organisms in developing chick embryos even after X-radiation; and on successful but inconstant transmission by the bites of different stages of Rhipicephalus sanguineus. It is considered that the fluke vector is more likely to constitute the "reservoir" of the disease agent than the susceptible vertebrate host.

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