. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PABASITES AND PAKASITIC DISEASES OF DOGS 33 Treatment.—No satisfactory treatment appears to have been estab- lished. Unless the parasites could be removed by the injection of some suitable substance into the nostrils, treatment would appear to be surgical. In default of successful treatment, dogs known to be infested with tongueworms should be destroyed on the ground that they are carriers of parasites which are dangerous to man and injurious to livestock. CX)CCIDIOSIS Cause.—Coccidiosis in the dog is due to t
. The dog as a carrier of parasites and diseases. Dogs as carriers of disease; Dogs. PABASITES AND PAKASITIC DISEASES OF DOGS 33 Treatment.—No satisfactory treatment appears to have been estab- lished. Unless the parasites could be removed by the injection of some suitable substance into the nostrils, treatment would appear to be surgical. In default of successful treatment, dogs known to be infested with tongueworms should be destroyed on the ground that they are carriers of parasites which are dangerous to man and injurious to livestock. CX)CCIDIOSIS Cause.—Coccidiosis in the dog is due to the presence and effects of very small protozoan parasites. There are four species of these para- sites reported from dogs. Some of them occur in the epithehum of the intestine and some of them under the epithelium in the submucous connective tissue. The parasites undergo certain developments in these tissues and multiply here. Ultimately they develop resistant forms called oocysts (fig. 33) which pass out in the feces and serve to infect other dogs. Cats are occasionally infected with coccidia but such infections are hkely to be overlooked. Symptoms.—In hght infestations coccidia may cause no perceptible symptoms in dogs or cats, but in heavy infestations diarrhea appears at the time when the oocysts are passing in the feces and it may be accompanied by the passage of blood and gas. There may be a slight rise in temperature during this time. Under unfavorable conditions, as in heavy infestations in very weak or young dogs or those with secondary infections, the animals may die. The diagnosis of coccidiosis depends on the finding of oocysts in the feces. Treatment.—No effective treatment for coccid- iosis in dogs or cats is known. However, the disease appears to be self-limited, all of the organisms present developuig in the course of j,,q^^j, 33 _j^ ^^^ gocdd- time to the oocyst stage and passing out. From 1™, isospora rivoita. , "" "^ J o . X- D. Matur
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