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United States Department of Agriculture
Animal and Plant Health Inspection Service

Bovine Spongiform Encephalopathy (BSE): Ongoing Surveillance Program

Last Modified: Jun 21, 2019
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Current Monthly Test Results

APHIS reports ongoing surveillance test totals monthly.

Beginning in Fiscal Year 2016, the BSE ongoing surveillance program will sample approximately 25,000 animals each year. Under the program, USDA will continue to collect samples from a variety of sites and from the cattle populations where the disease is most likely to be detected

FY 2019 (n=14,592)
Month Total Samples
October734
November1,464
December1,467
January985
February1,528
March2,790
April2,943
May2,035
June (As of June 15646

Fiscal Year 2007-2016 Test Results

For Fiscal Years 2007-2015, the BSE ongoing surveillance program had a target of testing approximately 40,000 animals per year.

OIE Surveillance Points: design prevalence of 1 case per 100,000 U.S. adult cattle and 95% confidence; 300,000 OIE points over 7 years, or 42,857 OIE points on average per year are required.

BSurvE Surveillance Points: design prevalence of 1 case per 1,000,000 U.S. adult cattle and 95% confidence; 3,000,000 points over 7 years, or 428,571 BSurvE points on average per year are required.

Samples Tested, OIE Points, and BSurvE Points by Fiscal Year

Fiscal Year

Total Samples
Tested as Valid
OIE Points per FY 

BSurvE Points

FY2012 42,202 1,066,637 2,523,447
FY 2013 43,173 1,048,554 2,505,042
FY 2014
 41,291 678,622
1,642,452
FY 2015
40,902
592,353
 1,414,630
FY 2016
26,564
547,959
1,314,579
FY 2017
24,229
577,494
1,383,678
FY 2018
21,809
402,576
952,160

* FY2007 - first complete year of BSE Ongoing Surveillance

 
BSE Ongoing Surveillance Program Cumulative Totals

  • Valid Tests From September 1, 2006 to January 31, 2018: 436,931
  • OIE Points From September 1, 2006 to January 31, 2018: 10,236,557
  • BSurvE Points From September 1, 2006 to January 31, 2018: 24,423,157


(see "BSE Ongoing Surveillance Plan" for information on OIE and BSurvE points)

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