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Evaluating Regional Projects &Opportunities for PRRS Elimination      Bob Morrison DVM, MBA, PhD         University of Min...
“Voluntary, producer-led,coordinated, regional disease     control programs”
Voluntary, Producer-led• All within the region will benefit,            but• Not all will participate.     “Producer-led”:...
PRRS CAP website
Cold Weather Biosecurity Practices: Preventing PRRSV         PRRSV happens year around but it is during the cold weather w...
N212 MN Regional PRRS Elimination            Program    Dave Wright, Montse Torremorell,             Bob MorrisonSwine Hea...
N212MN Project                         • N212MN funding                           – ’04 – ’06 - none• IACUC:              ...
Stevens County
Stevens County                                  2011       2004Reduced infected farms from31 in 2004 to none known in     ...
First Expansion
Second Expansion
Identified sites in the region•   251 negative sites•    46 positive sites•   409 unknown sites•   706 sites identified• 3...
Morris vetsAl Carlson                                      Nate Winkelman                                  Swine Vet Cente...
Sow herds in the region                   (& nurseries & finishers)                                         Sow herd size ...
ADMINISTRATIVE CHALLENGES• Site identification• Managing data base and maps• Notification of status changes• Relying on vo...
SOCIAL CHALLENGES• Encouraging participation• Weighing individual farm interest with region’s  interest• Managing confiden...
Managing Disclosure• Knowing the neighbor’s PRRS status is a  privilege.• Pressuring the neighbor will drive it  undergrou...
Update for NE IL:• Like many other areas, we had a quick rash of breaks in mid  fall, but have been able to contain them f...
NC IllinoisRegion             North-Central IL                  Density sows: 27.8/sq. mileYear / Quarter     Q4 2011, as ...
302520                                               NEG15                                             NEG PROV           ...
Nurseries (no sows or pigs >10 wks)                         <=1200     1201-2400       2401-4800       >4800              ...
80706050                                                                       NEG40                                      ...
Current Needs/Challenges:• Manpower – there never seems to be a shortage of things  we want to do for this area: education...
NE project
Cuming Co, NE1) Approx 10 new sow breaks & rumors of problems in some finishersthat havent been checked yet. These farrowi...
PRRS Area Regional Control Project        Iowa County, Iowa          Derald Holtkamp, DVM, MS              Iowa State Univ...
Project Area• West and north of Highway 151 to Highway 6  to Highway 149 as it bisects the county• All sites with commerci...
Swine Premises in Iowa County
Iowa CountyRegion                 Iowa County             Density sows:     10.28 per sq mileDate                   1/24/2...
Iowa County                             Sow herd status12108                                                       Negativ...
Nurseries (no sows or pigs >10 wks)                            <=1200                1201-2400           2401-4800        ...
Iowa County• Substantial progress in 2011.• Only 2 incidents of PRRS.  – A nursery that receives pigs from an outside    s...
Some highlights:• Dr. Aljets presented at the Swine Disease Conference at  Iowa State in November 2011• A project vet requ...
What’s next?• Herd plans• Expanded the project boundaries to include all of Iowa  County commercial producers.   – Many pr...
Current needs & challenges:• Keep producers focused and motivated. To encourage the project  onwards we plan to hold biose...
“Voluntary, producer-led, coordinated, regional disease         control programs”
Current Issues & Workgroups:• 7 working groups• Failure of some closure programs• Risk factors for spread in hog dense reg...
Seven working groups:1. Standard Of Practice for sow herd management &   sampling2. Minimum sampling guidelines for low ri...
Evaluating Regional Projects &Opportunities for PRRS Elimination
PRRS SURVIVABILITY STUDIES         Condition                            Length of Survival          Frozen                ...
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination
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Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination

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Part I Evaluating Regional Projects and Opportunities for PRRS Elimination, Dreaming of a World without PRRS - Dr. Robert Morrison, University of Minnesota, College of Veterinary Medicine, from the 2012 Iowa Pork Congress, January 24 - 26, Des Moines, IA, USA.

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Dr. Robert Morrison - Evaluating Regional Projects and Opportunities for PRRS Elimination

  1. 1. Evaluating Regional Projects &Opportunities for PRRS Elimination Bob Morrison DVM, MBA, PhD University of Minnesota & USDA PRRS CAP
  2. 2. “Voluntary, producer-led,coordinated, regional disease control programs”
  3. 3. Voluntary, Producer-led• All within the region will benefit, but• Not all will participate. “Producer-led”: - Acceptance - Patience - Subtle persistence
  4. 4. PRRS CAP website
  5. 5. Cold Weather Biosecurity Practices: Preventing PRRSV PRRSV happens year around but it is during the cold weather when we see most of the infections. As we approach this cold season, remember the following: SUGGESTED RESPONSE GUIDE TO A PRRS OUTBREAK 1. PRRSV likes it cold and humid.PURPOSE: The purpose of this document is to encourage all partieswet andby a newbeen cleaned and PRRSV survives well on equipment that is still affected hasn’toutbreak of PRRS to consider how he/she will respond to the outbreak in a way that willsatisfy and protect the best interest of all parties.RESPONSE BY PRODUCER WHO CONTRACTS NEW PRRS OUTBREAK: 1. Gather team to discuss diagnosis, possible OF DISCLOSURE OF PRRS POSITIVE SITE RISK source of infection, strategy for investigation, and expected implications. Consider including local veterinarian, consulting veterinarian, farm managers, key employees, banker/finance manager, prepare for the possibility PURPOSE: The purpose of this document is to help producers and regional PRRS coordinator. Discuss disclosure arrangement and how to share of a PRRS outbreak—to anticipate the variable and uncontrolled responses by results with regional elimination participants. individuals, businesses and the community. No one can control or predict behavior in a voluntary effort to eliminate a disease, but it is important for each producer to PRRS OUTBREAK risk of disclosing a positive site. contemplate the INVESTIGATION PROTOCOLObjective: The purpose of this protocol is to assist the veterinarian and producer inbuilding a comprehensive case history with the ultimate goal of discovering the source ofa new PRRS infection.
  6. 6. N212 MN Regional PRRS Elimination Program Dave Wright, Montse Torremorell, Bob MorrisonSwine Health Center, Morris Vet Clinic, NateWinkelman, Swine Vet Center, Neil DeBuse, Fairmont Vet Clinic & others
  7. 7. N212MN Project • N212MN funding – ’04 – ’06 - none• IACUC: – ’07 – ’09 - USDA – 0711A21864 – ‘10 – ’12 – PRRS CAP & UMN SDEC • Rice – MPB• Disclosure: – BI PRRS Initiative – RBM - 2 sow farms in Stevens Cy – AASV
  8. 8. Stevens County
  9. 9. Stevens County 2011 2004Reduced infected farms from31 in 2004 to none known in 2012 (5.7% of sites unknown)
  10. 10. First Expansion
  11. 11. Second Expansion
  12. 12. Identified sites in the region• 251 negative sites• 46 positive sites• 409 unknown sites• 706 sites identified• 315 have signed the participation agreement
  13. 13. Morris vetsAl Carlson Nate Winkelman Swine Vet Center Has sows negative Growing pigs, no sows unknown positive
  14. 14. Sow herds in the region (& nurseries & finishers) Sow herd size <=100 101-600 601-1500 1501-3000 >3000Farrow to wean 1 1 13 12 11Farrow to feeder 1Farrow to finish 23 11 Sow herd size <=100 101-600 601-1500 1501-3000 >3000Unknown 17 5 8 1 2Positive 1 1 1Positive stableNegative provisionalNegative 7 8 4 10 8
  15. 15. ADMINISTRATIVE CHALLENGES• Site identification• Managing data base and maps• Notification of status changes• Relying on voluntary disclosure for herd status updates
  16. 16. SOCIAL CHALLENGES• Encouraging participation• Weighing individual farm interest with region’s interest• Managing confidentiality and risk of disclosure
  17. 17. Managing Disclosure• Knowing the neighbor’s PRRS status is a privilege.• Pressuring the neighbor will drive it underground.• “Thank you for telling me. I’m sorry this is happening to you. Do you mind telling me your plans? Is there anything I can do to help?”
  18. 18. Update for NE IL:• Like many other areas, we had a quick rash of breaks in mid fall, but have been able to contain them fairly well. All of those producers are in the midst of control programs, and will or have started elimination plans (Load-Close- Homegenize). One sow farm has decided to go ahead and filter the farm. No new strain introductions this year.• The mood continues to be one of “Yes, We Can”; however, it is disheartening on all sides (vets & producers) when breaks on farms, that have eliminated virus and were having phenomenal production, occur. Everyone is still committed to the end goal: controlling & eliminating field-strain PRRS from our area.
  19. 19. NC IllinoisRegion North-Central IL Density sows: 27.8/sq. mileYear / Quarter Q4 2011, as of Dec. 31, 2011 Density pigs: 194.6/sq. mile Sow herd size <=100 101-600 601-1500 1501-3000 >3000Farrow to wean 1 4 3Farrow to feeder 1 2Farrow to finish 2 7 3 1TOTAL 2 7 5 6 4 24 Sow herd Status by Size <=100 101-600 601-1500 1501-3000 >3000Unknown 1 1 1Positive 4** 2*** 4**** 1Positive stable 1 2 1 1 2Negative provisional 1Negative 1 1TOTAL 2 7 5 6 4 24
  20. 20. 302520 NEG15 NEG PROV POS-STABLE10 POS UNK50 2010 2010 2010 2010 2011 2011 2011 2011 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4
  21. 21. Nurseries (no sows or pigs >10 wks) <=1200 1201-2400 2401-4800 >4800 Source Source Source Source IN OUT IN OUT IN OUT IN OUT Unknown Positive 1* 1* 3^ Negative Total 1 0 1 0 3 0 0 0 5 Finishing or Wean to finish <=1200 1201-2400 2401-4800 >4800 Source Source Source Source IN OUT IN OUT IN OUT IN OUT Unknown 1 1 2 Positive 9* 3* 8^^ 1* 8^^^ 4** 10^^^^ 43 Negative 2 1 1 3 7 Total 9 3 11 2 10 4 13 0 5224 sows, 5 nurseries, 52 finishers* - Positives are MLV strain** - 2 of 4 are MLV strain*** - 1 of 2 are MLV strain**** - 3 of 4 are MLV strain
  22. 22. 80706050 NEG40 POS-MLV POS30 UNK20100 Q1 2010 Q2 2010 Q3 2010 Q4 2010 Q1 2011 Q2 2011 Q3 2011 Q4 2011
  23. 23. Current Needs/Challenges:• Manpower – there never seems to be a shortage of things we want to do for this area: educational programs, improved biosecurity trainings, enhanced testing• Endurance – the original “push” seems to have faded, and the challenge will continue to be staying focused & motivated in the years ahead• Coordination Among Projects – now that there are so many projects throughout the US, there needs to be a focused effort (by NPB, AASV?) to connect the leaders, coordinators, and participants of these projects so that they can learn from each other, work in tandem with one another (projects now know pig flows not only in & out of their area, but in & out of other project areas).
  24. 24. NE project
  25. 25. Cuming Co, NE1) Approx 10 new sow breaks & rumors of problems in some finishersthat havent been checked yet. These farrowing units provide pigs toabout 25-30 grow finish sites so we are trying to get to all of the sitesto see if offspring is positive. Primarily reproductive problems at sowunits with high number of parasuis cases in newly positive nurseries.2) The mood is pretty good. The project still has good momentumalthough it does come in spurts. It seems if I have enough time to getout to producers with project they are really excited. We are tryingsome MJ prrs in a couple of our areas.3) The current needs of the project continue to be that of time todevote to it. When it is rolling we can accomplish a lot in a little bit oftime but it does get bogged down from time to time.
  26. 26. PRRS Area Regional Control Project Iowa County, Iowa Derald Holtkamp, DVM, MS Iowa State University College of Veterinary Medicine IVMA Winter Conference February 8, 2012
  27. 27. Project Area• West and north of Highway 151 to Highway 6 to Highway 149 as it bisects the county• All sites with commercial pigs
  28. 28. Swine Premises in Iowa County
  29. 29. Iowa CountyRegion Iowa County Density sows: 10.28 per sq mileDate 1/24/2012 Density pigs: 186.89 per sq mile Sow herd size <=100 101-600 601-1500 1501-3000 >3000Farrow to wean 1 1 1Farrow to feederFarrow to finishShowUnknown 2 5 Sow herd size <=100 101-600 601-1500 1501-3000 >3000UnknownPositive 2 1Positive stable 1 1Negative provisionalNegative 2 3
  30. 30. Iowa County Sow herd status12108 Negative Negative provisional6 Positive stable4 Positive Unknown20 2010 Q3 2010 Q4 2011 Q1 2011 Q2 2011 Q3 2011 Q4
  31. 31. Nurseries (no sows or pigs >10 wks) <=1200 1201-2400 2401-4800 >4800 Source Source Source Source inside outside inside outside inside outside inside outside region region region region region region region region Unknown Positive 1 1 Positive stableNegative provisional Negative 1 1 Total 2 2 Finishing or Wean to finish <=1200 1201-2400 2401-4800 >4800 Source Source Source Source inside outside inside outside inside outside inside outside region region region region region region region region Unknown Positive 3 (2 finishers by vaccine) 1 1 Positive stableNegative provisional Negative Total 3 1 1
  32. 32. Iowa County• Substantial progress in 2011.• Only 2 incidents of PRRS. – A nursery that receives pigs from an outside source. Sequence matches source’s strain. – A wean-to-finish site that had been negative since the beginning of the area project, but in November was positive. Source is unknown.
  33. 33. Some highlights:• Dr. Aljets presented at the Swine Disease Conference at Iowa State in November 2011• A project vet requested a feed truck delivery pyramid be drafted the project area. Feed truck biosecurity facts and tips were drafted and will be shared with the producers.• Project dendogram continues to be built.• Monthly updates continue to be sent to producers and veterinarians which contain data tables, maps and other appropriate updates• PADRAPs are all but complete, only 2 more need to be completed
  34. 34. What’s next?• Herd plans• Expanded the project boundaries to include all of Iowa County commercial producers. – Many producers in the eastern portion of the county are beginning to get involved with the Washington County project and sharing their information, & would be willing to become a part of the Iowa County Project. – Many sow farms in eastern portion of the county or Washington county finish pigs in our current project area or vice versa. If we were to expand the project, producers and veterinarians believe that we could get a more complete picture of pig and virus movement in the county.
  35. 35. Current needs & challenges:• Keep producers focused and motivated. To encourage the project onwards we plan to hold biosecurity workshops, bring in quest speakers at quarterly meetings and explore other options. Some producers are not excited to be retested. Leaders of project, along with vets are encouraging producers to keep monitoring sites, as well as complete PADRAPs and herd plans.• Positive pigs are being placed in project area. If we could get negative pigs coming into area that would automatically clean up many growing pig sites.• Better biosecurity. We are focusing on better biosecurity practices including feed truck delivery biosecurity and transporting market hogs. Transporting market hogs was the main focus of the last producer meeting.
  36. 36. “Voluntary, producer-led, coordinated, regional disease control programs”
  37. 37. Current Issues & Workgroups:• 7 working groups• Failure of some closure programs• Risk factors for spread in hog dense regions
  38. 38. Seven working groups:1. Standard Of Practice for sow herd management & sampling2. Minimum sampling guidelines for low risk sow herds and growing pig sites3. Risk based sampling4. Incorporating oral fluids into sampling-testing guidelines5. Managing the risk of disclosure6. Farrow to finish herds7. Guidelines for implementing common reports, including mapping legends
  39. 39. Evaluating Regional Projects &Opportunities for PRRS Elimination
  40. 40. PRRS SURVIVABILITY STUDIES Condition Length of Survival Frozen Years Moist, Cold, Wet 11 days 700 F (210 C) 6 days 98.6 0 F (37o C) 24 hours 132o F (56o C) 20 minutesPitkin, Otake, Dee, “Biosecurity protocols for theprevention of spread of PRRSv”, Swine DiseaseEradication Center, University of Minnesota

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