veterinary services scrapie surveillance - usda · 2018. 7. 16. · scrapie surveillance. diane...
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Scrapie Surveillance
Diane SuttonSheep and Goat Health Commodity Team Lead
U.S. Department of AgricultureAnimal and Plant Health Inspection Service
Veterinary ServicesSecretary’s Advisory Committee on Animal Health
February 2016
Veterinary Services
Tasks
2
• Develop novel approaches for increasing producer and veterinarian submission of mature sheep/goats that die on-farm and mature sheep/goats that are slaughtered on-farm.
• Develop strategies for increasing producer and veterinarian reporting of mature sheep/goats that have scrapie signs.
Background and Current Status
3
* As of December 31, 2015.
Infected and Source Flocks New Statuses by Year - Fiscal Years 1997 to 2016*
0
50
100
150
200
InfectedSource
* As of December 31, 2015. Adjusted to exclude multiple positive animals from the same flock. Does not include Nor98-like scrapie cases found through RSSS (2 in FY 2007, 1 in FY 2008, 4 in FY 2010, 1 in FY 2011).
0.00%
0.02%
0.04%
0.06%
0.08%
0.10%
0.12%
0.14%
0.16%
% Pos '03% Pos '04% Pos '05% Pos '06% Pos '07% Pos '08% Pos '09% Pos '10% Pos '11% Pos '12% Pos '13% Pos '14% Pos '15% Pos '16
Percent of RSSS Sheep Samples that Tested Positive for Classical Scrapie - Weighted by Face Color
Fiscal Years 2003 to 2016*
0.00%0.02%0.04%0.06%0.08%0.10%0.12%0.14%0.16%0.18%0.20%
% Pos '08% Pos '09% Pos '10% Pos '11% Pos '12% Pos '13% Pos '14% Pos '15
Percent of RSSS Samples that TestedPositive for Classical Scrapie by Face Color
Fiscal Years 2008 – 2015
Scrapie Confirmed Cases FY 2015
WY
WV
WI1/1
WA
VT
UT
TX
TN
SD
SC
RIPA
OR
OK
OH2#
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI
ME
MA
LA
KYKS
IN
ID26
IA
HI
GA
FL
DE
CT
CO1*/2
CA
AZAR
AK
AL
Type of Scrapie
RSSS Field Cases
Total
Classical 4 29 33
(Nor98-like)
(0) (0) (0)
Total 4 29 33
VA
IL
* First RSSS positive goat identified in November 2014. # RSSS positive case with IN serial tag was traced to OH.
MD
Scrapie Confirmed Cases FY 2016As of December 31, 2015
WY
WV
WI
WA
VT
UT
TX
TN
SD
SC
RIPA
OR
OK
OH8
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI1
ME
MA
LA
KYKS
IN1
ID
IA
HI
GA
FL
DE
CT
COCA
AZAR
AK
AL
Type of Scrapie
RSSS Field Cases
Total
Classical 1 9 10
(Nor98-like)
(0) (0) (0)
Total 1 9 10
VA
IL
MD
WY
WV
WI
WA1
VT
VA
UT
TX
TN
SD
SC
RIPA
OR
OK
OH5
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI6
ME
MD – 2
MA
LA
KYKS
INIL1
ID
IA7
HI
GA
FL
DE
CT
CO1*/4CA
13AZ1 AR
AK
AL
Scrapie Cases in Goats FY 2002 – FY 2016 As of December 31, 2015
Type of Scrapie
RSSS Field Cases
Total
Classical 1 40 41
(Nor98-like) (0) (0) (0)
Total 1 40 41
* First RSSS positive goat identified in November 2014.
12
Scrapie Surveillance Activities
• Slaughter surveillance– Regulatory Scrapie Slaughter Surveillance (RSSS)
• On-Farm surveillance– Investigations of clinical suspects– Trace investigations of exposed and potentially
exposed animals– Routine farm surveillance– Voluntary Scrapie Free Flock Certification Program
(SFCP)
• Laboratory surveillance– Public health laboratories – rabies negative animals– Veterinary diagnostic laboratories – necropsied
animals
Sheep Demographics• 3.1 million breeding sheep >1 yr• Culling rate ~15% or ~465,000 per year• Death losses 220,000 per year• Percent tested for scrapie FY 2015 4.9%
Goats Demographics• 2.2 million breeding goats• Culling rate ~16% or ~352,000 per year• Death losses 158,400• Percent tested for scrapie FY 2015 1.4%
* As of December 31, 2015
RSSS and On-Farm Surveillance Testingby Species - FY 2016*
81%
19%
RSSS
Sheep Goats
64%
36%
On-Farm
Sheep Goats
Total tested 8,731
8,384 tested 347 tested
Slaughter Surveillance Samples Collected by MonthFiscal Years 2012 to 2016
As of December 31, 2015
0
1000
2000
3000
4000
5000
6000
10 11 12 1 2 3 4 5 6 7 8 9
FY 12FY 13FY 14FY 15FY 16
Month
18
05000
1000015000200002500030000350004000045000
FY '03
FY '05
FY '07
FY '09
FY '11
FY '13
FY '15
Other Sheep*GoatWhite FaceMottled <1% BlackMottled >1% BlackBlack Face
* Includes gray, red, and unknown face color; and hair sheep. Chart includes animals collected for RSSS & CSPS. % Black of mottled-faced sheep available since FY 2009
Surveillance Samples Collected at Slaughter FY 2003 – 2015
WY
WV
WI
WA
VT
VA
UT
TX
TN
SD
SC
RIPA
OR
OK
OH
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI
ME
MD
MA
LA
KYKS
INIL
ID
IA
HI
GA
FL
DE
CT
CO
CA
AZAR
AK
AL≤ 20%
21 - 40%
41 - 60%
61 - 80%
81 - 99%
100% +
Percent of Sampling Minimum Achievedin FY 2015—RSSS and On-farm Surveillance—Sheep*
* As of September 30, 2015.
WY
WV
WI
WA
VT
VA
UT
TX
TN
SD
SC
RIPA
OR
OK
OH
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI
ME
MD
MA
LA
KYKS
INIL
ID
IA
HI
GA
FL
DE
CT
CO
CA
AZAR
AK
AL≤ 20%
21 - 40%
41 - 60%
61 - 80%
81 - 99%
100% +
Percent of Sampling Minimum Achievedin FY 2015—RSSS and On-farm Surveillance—Goats*
* As of September 30, 2015. AK, RI and DE have a sampling minimum of 1. IA and MD had a large increase in their minimums due to finding an infected herd in each State in FY 2014.
Scrapie Flock Certification Program: Participating FlocksAs of September 30, 2015
Total Enrolled Flocks—441• Export Monitored—142• Export Certified—22• Select Monitored—277
(includes 14 in Puerto Rico)
WY5
WV1
WI21
WA15
VA3
UT4
TX0
TN-13
SD6
SC16
RI-2PA45
OR10
OK5
OH3
NY5
NV2
NM3
NJ-12NE6
ND0
NC-12
MT4
MS11
MO2
MN7
MI7
ME17
MD-1
MA-6
LA7
KY-12KS6
IN30
IL7
ID9
IA6
HI21
GA16
FL15
DE-0
CT-12
CO1CA
7
AZ1 AR
0
AK1
AL8
VT16
NH-12
PR 14
Traceability One Key to Scrapie Surveillance Success
22
• Sheep and Goat Identification Rules– Most sheep and many goats must be officially
identified to move in inter- and intrastate commerce
– Adopted in 2001– Updating rule to better align goat ID requirements
with sheep requirements
• Encourage compliance by providing free official ear tags to sheep and goat producers– Over 95% sheep arrive at slaughter facilities with
official ID– Over 50% goats arrive at slaughter facilities with
official ID
* April – September, 2003
0%10%20%30%40%50%60%70%80%90%
100%UntraceableTraceable
Average % Traceable FY03-FY15
85%
Investigations of RSSS Positive AnimalsFiscal Years 2003* - 2015
Percent of Sheep Flocks Reported by NASS (2012 Census Report) Assigned Flock Identification Numbers
WY
WV
WI
WA
VT
VA
UT
TX
TN
SD
SC
RIPA
OR
OK
OH
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI
ME
MD
MA
LA
KYKS
INIL
ID
IA
HI
GA
FL
DE
CT
CO
CA
AZAR
AK
AL≤ 20%
21 - 40%
41 - 60%
61 - 80%
81 - 100%
> 100%
Percent of Goat Herds Reported by NASS (2012 Census Report) Assigned Flock Identification Numbers
≤ 20%
21 - 40%
41 - 60%
61 - 80%
81 - 100%
> 100%
WY
WV
WI
WA
VT
VA
UT
TX
TN
SD
SC
RIPA
OR
OK
OH
NY
NV
NM
NJ
NH
NE
ND
NC
MT
MS
MO
MN
MI
ME
MD
MA
LA
KYKS
INIL
ID
IA
HI
GA
FL
DE
CT
CO
CA
AZAR
AK
AL
Tasks
27
• Develop novel approaches for increasing producer and veterinarian submission of mature sheep/goats that die on-farm and mature sheep/goats that are slaughtered on-farm.
• Develop strategies for increasing producer and veterinarian reporting of mature sheep/goats that have scrapie signs.
Diane Sutton, DVMNational Scrapie Program CoordinatorSheep & Goat Health Team LeaderUSDA, APHIS, VS, SPRS
301-851-3509 [email protected]