Massachusetts 

 agricultural experiment station 



CONTROL SERIES BULLETIN NO. 98 JUNE, 1939 



Nineteenth Annual Report on 



Eradication of Pullorum Disease 



in Massachusetts 



By the Poultry Disease Control Laboratory 



The 1938-39 testing results reported in this bulletin show further progress 

 in pullorum-disease eradication. There was a very marked increase in the 

 amount of testing done, and the percentage of reactors (0.34) increased slightly 

 over the previous season. Detection of infection in flocks previously negative 

 indicates the necessity and wisdom of annual testing. Most flock owners ap- 

 preciate the value of an annual 100 percent flock testing program when it is 

 supplemented with effective disease preventive measures. 



MASSACHUSETTS STATE COLLEGE 

 AMHERST, MASS. 



