the different counties have changed but little in comparison with the previous 

 season A substantial increase in the number of non-reactmg flocks is very 

 encouraging. 



Table 5. Comparison of 1940-41 and 1941-42 Testing 



County 



Flocks 



Birds 



Tests 



Positive Non- 

 Tests Reacting 

 Percent Flocks 



1940-41 Season 



Barnstable 2 3,377 3.377 



Berkshire 6 12.013 2 548 



Bristol 48 75.605 78.96 



Essex 33 45.932 46.585 



Franklin 27 48.673 48.673 



Hampden 20 16.964 16.964 



Hampshire 19 21.157 21.15 



Middlesex 53 88.086 89.093 



Norfolk 31 71.745 77.455 



Plymouth 29 54,735 54.73 



Worcester 41 89.041 8 



Totals 309 527.328 



1941-42 Season 



Barnstable 2 3.713 3 713 



Berkshire 4 7.472 7.472 



Bristol 52 86.527 86,52 



Dukes 2 2,541 2 541 



Essex 55 82.020 82.104 



Franklin 33 56,072 56.072 



Hampden 23 18.462 18.528 



Hampshire 31 29.042 30.892 



Middlesex 54 106.191 106.531 



Norfolk 29 90.864 98.159 



Plymouth 31 66,421 66,421 



Suffolk 1 608 *°? 



Worcester 49 103.147 103.147 



Tota l s 366 653,080 662.715 



0.00 



0.08 



0.05 



0.00 



0.004 



0.06 



0.00 



0.09 



0.43 



0.00 



0.00 



0.09 



0.00 



0.31 



0.003 



0.00 



0006 



0.00 



0.03 



0.04 



0.07 



1.67 



0.00 



0.00 



0.002 



0.27 



2 

 6 

 46 

 33 

 26 

 19 

 19 

 50 

 28 

 29 

 41 



299 



2 



2 

 51 



2 

 53 

 33 

 20 

 31 

 49 

 27 

 31 



1 

 48 



350 



Twenty-Two-Year Testing Period Shows Progress in Eradication 



Table 6 gives the testing results for a 22-year testing period. It will be noted 

 that during this period an increasing number of flocks and birds have been tested 

 and that the percentage of infection has been reduced to a very low figure. Dur- 

 ing the past 11 years, the average percentage of infection has been less than one 

 pe.cent for all samples tested, a total of 5,101,653. This consistently low per- 

 centage of reactors shows that Massachusetts flock owners have been successful 

 in eliminating the disease from the bulk of their breeding flocks. This is further 

 substantiated by the increasing percentage of birds in non-reacting flocks 



These results show that pullorum disease can be eliminated through the ap- 

 plication of sound eradication and prevention measures. Furthermore, the pro- 

 gress is verv remarkable in view of the fact that the testing work has operated on 

 a voluntary basis. For the most part, flock owners have made every effort to 

 understand the pullcrum-disease problem and have voluntarily cooperated in 

 establishing and maintaining pullorum free flocks. 



