POULTRY DISEASES AND THEIR TREATMENT 
CHICKEN POX OR SORE HEAD 
An infectious disease that causes considerable loss among 
chickens and young birds in warm climates 
Symptoms. Small, scabby, wart-like 
growths and eruptions on the head, espe- 
cially on the comb and the wattles and 
around the eyes—in bad cases extending to 
the lids and even the mouth. Chickens and 
young birds are most commonly attacked 
by this disease, which spreads rapidly. 
Fic. 10.—CHICKEN POX 
Cause. The specific organism has not 
been definitely determined. Chicken pox 
may be started by the introduction of an 
38 
