LABOR, LIVE STOCK SANITARY BOARD, FORESTRY 105 



problem. Prom this realization has come the Area Test Plan of Eradi- 

 cation which has been adopted by the forty-eight states of the Union 

 The advantages of this plan are numerous. Prom an economic stand- 

 point, the cost per head under this system is far below that of any 

 other. It encourages and increases the breeding of cattle in such 

 areas. Cattle buyers prefer to make their purchases in such areas and 

 are willing to pay a premium over prices in non-tested areas. The 

 plan consists of testing all the cattle in a circumscribed area; con- 

 demning all reactors, cleaning and disinfecting infected premises, and 

 retesting all infected herds every sixty or ninety days until the herd 

 passes a clean test. In counties where the infection is less than one- 

 half of one per cent, the area is subject to become a modified accredited 

 county. After a county has been officially declared a modified ac- 

 credited area, it is quarantined for a period of three years and un- 

 tested cattle are not allowed to enter. Cattle from accredited areas 

 are eligible for interstate shipment without further test, with few ex- 

 ceptions. 



Observation and statistics indicate that there can be no better way 

 to eradicate tuberculosis than to first control it in given areas. There- 

 fore, the Board's efforts during the past two years have practically 

 been confined to the County Area Plan. Fifty-three counties have 

 been completely tested and the campaign is in active progress in nine 

 others. Twenty-eight counties have been declared Modified Accredited 

 Counties. 



SUMMARY OF TUBERCULOSIS ERADICATION 

 Tuberculin Testing, Fiscal Year 1927-1928 



Lots Cattle Passed Reactors Total 



Cooperative Forces, Intradermic 

 15,510 86,048 369 86,417 



Cooperative Forces, Combination 

 5 55 2 57 



Cooperative Forces, Total 

 15,515 86,103 371 86,474 



Accredited Herd Work by Practitioners, Intradermic 

 40 1,545 2 1,547 



Accredited Herd Work by Practitioners, Combination 

 2 2 2 



Accredited Herd Work by Practitioners, Total 

 42 1,547 2 1,549 



Total Tested Under Supervision 

 15,557 87,650 373 88,023 



Cattle Tested at Bourbon Stock Yards 

 208 9,410 1 9,411 



Local Tests by Practitioners 

 443 4,352 29 4,381 



