TABLE 6-3.

Other Reported Infectious Causes of Calf Diarrhea (Significance of These Organisms Is Unknown)

Organism	Signs	Treatment	Reference
Giardia	Often no signs. High morbidity, low mortality. Diarrhea in 2- to 12-wk-old calves	Fenbendazole 15 mg/kg bwt for 3 days	Claerebout E, et al: New therapeutic approaches to Cryptosporidiosis and Giardiosis. In ACVIM Proceeding, 2006.
Campylobacter sp. (jejuni, fecalis, or coli)	Generally no disease. Diarrhea with blood and mucus	IV and oral fluids. Tetracycline or erythromycin	Morgan JH, Hall GA, Reynolds J: The association of Campylobacter species with calf diarrhea.
			In Proceedings: 14th World Congress on Diseases Cattle, 1986, pp. 325-330.
Clostridium difficile	Possible diarrhea in calves < 2 wk of age, although experimental inoculation did not cause diarrhea	Supportive