Fowl Typhoid and Fowl Cholera 
Si 
FOWL CHOLERA 
1. Avian cholera, caused by Pasteurella avicida, is prevalent in most coun¬ 
tries where poultry is kept. No outbreaks of avian cholera have been re¬ 
corded in North Carolina during the period of these investigations. 
2. The dissemination of this disease in the flock and from flock to flock 
is pi obably accomplished through the same agencies as in the case of avian 
typhoid. 
3. There are morphological differences and differences in physiological 
reactions of the causative organisms of these specific diseases that differ¬ 
entiates them as separate and distinct germs. 
4. The clinical symptoms, blood changes, and pathological anatomy of these 
diseases, though having much in common, are sufficiently different to estab¬ 
lish a basis for differential diagnosis. 
5. Control measures that apply to avian typhoid should be effective in 
checking the spread of avian cholera. 
We wish to thank the following for response in sending cultures to these 
laboratories for further studies and other assistance they may have given: 
Dr. L. F. Rettger, Connecticut Exp. Station; Dr. H. G. May, Rhode Island 
Exp. Station; Parke-Davis Co., Detroit, Mich.; Dr. A. T. Kinsley, Kansas 
City, Mo.; Massachusetts Agricultural College; Dr. J. R. Beach, California 
Exp. Station; Bureau of Animal Industry, U. S. Dept, of Agriculture; Dr. 
Taylor, So. Dakota Experiment Station; Lederle, H. K. Mulford, and Jen-Sal 
laboratories; American Museum of Natural History; Botany Department, 
N. C. State College; N. C. State Laboratory of Hygiene; Lister Institute, 
England, Pasteur Institute, Paris; Dr. B. J. C. teHennepe, State Serum 
Laboratories, Rotterdam, Holland, and other workers in Belgium, Holland, 
and Budapest, Hungary. 
