EIA Updates

Please see the updates, listed in date order, for the Equine Infectious Anemia Case recently diagnosed in Colorado.  These updates were originally posted on Facebook:

As of 10/22/18 The Colorado State Veterinarian's Office at CDA has continued to work to trace and test horses involved in the August 2018 EIA Incident.  As of 10/22/2018:

  • The index premises under quarantine and the two associated premises under hold orders have been released; 126 exposed horses were re-tested for EIA on 10/19/2018 and found to be negative.  
  • 66 premises were placed under hold orders in 24 Colorado counties: Adams, Arapahoe, Archuleta, Boulder, Costilla, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Morgan, Phillips, Sedgwick, and Weld.  
  • 31 premises have been released from hold orders after the 60-day re-tests were completed for all exposed horses on the premises.  
  • All 149 exposed horses have been located in Colorado (out of approximately 149 we expect to be in Colorado).  
  • 75 exposed horses have been located in 12 states (out of approximately 82 we expect to be out-of-state):  Arizona, Idaho, Kentucky, Louisiana, Maine, Missouri, Nebraska, Nevada, Oklahoma, Tennessee, Texas, and Wyoming.  
  • All exposed horses are now eligible for their final 60-day EIA re-test.  Horse owners are working with their veterinarians to complete the required testing of the exposed horses, in order to be released from the hold order. 

As of 09/27/2018 The Colorado State Veterinarian’s Office at CDA has continued to work to trace and test horses involved in the EIA Incident in the State of Colorado:

  • Only one confirmed positive horse in Colorado (index case)
  • The index premises in Weld County is under a quarantine order; two associated premises are under hold orders. The 124 exposed horses under quarantine on the index premises tested negative for EIA on 09/10/2018; they will be re-tested on or after 10/19/2018 (sixty days after last exposure to the positive horse).  
  • 138 exposed horses have been located in Colorado (out of approximately 152 we expect to be in the state)
  • 61 premises are under hold orders in 24 Colorado counties: Adams, Arapahoe, Archuleta, Boulder, Costilla, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Morgan, Phillips, Sedgwick, and Weld.
  • Five premises have been released from hold after the 60-day re-tests were completed for all exposed horse(s) on those premises and found to be negative.  
  • 72 exposed horses have been positively identified in 12 other states (out of approximately 83 we expect to be out-of-state): Arizona, Idaho, Kentucky, Louisiana, Maine, Missouri, Nebraska, Nevada, Oklahoma, Tennessee, Texas, and Wyoming.

Re-testing of Exposed Horses under Hold Orders:

Many of the exposed horses will be eligible for their final 60-day EIA re-test over the next three weeks. We have informed owners of exposed horses to work with their veterinarians to get the re-testing done after the date stated on their Hold Orders. The date varies depending on the last date that their horse was exposed to the EIA-positive horse. At this time only the exposed horses need to be tested, not all of the horses on the premises under the Hold Order.

Once we receive the negative 60-day EIA re-test results, CDA will release the Hold Order as quickly as possible so please notify our office with the results. If you have any questions, please call the State Veterinarian’s Office at 303-869-9130 or email animalhealth@state.co.us.

We appreciate your collaborative work in completing the necessary testing in this EIA incident.

As of 09/24/2018:

  • Only one confirmed positive horse in Colorado (index case)
  • The index premises in Weld County is under a quarantine order; two associated premises are under hold orders. The 124 exposed horses under quarantine on the index premises tested negative for EIA last week; they will be re-tested on or after 10/19/2018 (sixty days after last exposure to the positive horse).
  • 128 exposed horses have been located in Colorado
  •  54 premises are under hold orders in 20 Colorado counties: Adams, Arapahoe, Boulder, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Phillips, and Weld
  • 64 exposed horses have been positively identified in 10 other states: Arizona, Kentucky, Louisiana, Maine, Missouri, Nebraska, Nevada, Oklahoma, Texas, and Wyoming
  • Last week, two exposed horses that were re-tested on their final 60-day test were negative and those two Colorado premises were released from their Hold Order

Re-testing of Exposed Horses under Hold Orders:

Some of the exposed horses will be eligible for their final 60-day EIA re-test over the next four weeks. We have informed owners and their veterinarians about the testing of exposed horses which can begin on the date stated on their Hold Orders. The date varies depending on the last date that their horse was exposed to the EIA-positive horse. At this time only the exposed horses need to be tested, not all of the horses on the premises under the Hold Order.

Once we receive the negative 60-day EIA re-test results, CDA will release the Hold Order as quickly as possible so please notify our office with the results. If you have any questions, please call the State Veterinarian’s Office at 303-869-9130 or email animalhealth@state.co.us.

We appreciate your collaborative work in completing the necessary testing in this EIA incident.

As of September 20th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in:

  •  Only one confirmed positive EIA horse in Colorado which is the index case
  •  The index premises in Weld County is under a quarantine order; two associated premises are under hold orders 
  •  Fifty-one (51) premises are under hold orders in 20 Colorado counties: Adams, Arapahoe, Boulder, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gilpin, Gunnison, Huerfano, Jefferson, Larimer, Mesa, Moffat, Montrose, Phillips, and Weld
  •  The counties are not under Hold Orders, only the premises within the counties are under the Hold Orders until re-testing is complete
  •  122 exposed horses that left the index premises have been located in Colorado and are under Hold Orders
  •  124 exposed horses under quarantine on the index premises tested negative for EIA last week; they will be re-tested on or after 10/19/2018 (sixty days after last exposure to the positive horse)
  •  Fifty-seven (57) exposed horses that left the State have been positively identified in nine other states: Arizona, Kentucky, Louisiana, Maine, Nebraska, Nevada, Oklahoma, Texas, and Wyoming
  •  Some of the exposed horses will be eligible for their final 60-day EIA re-test in the next week – CDA is working with those individual horse owners and their veterinarians so that the Hold Orders can be released on a final negative test.

As of September 17th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in:

  •  Only one confirmed positive EIA horse in Colorado which is the index case
  •  The index premises in Weld County is under a quarantine order; two associated premises are under hold orders
  •  Forty-four (44) premises are under hold orders in 17 Colorado counties: Adams, Arapahoe, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gunnison, Huerfano, Larimer, Mesa, Moffat, Montrose, Phillips, and Weld
  •  The counties are not under Hold Orders, only the premises within the counties are under the Hold Orders until re-testing is complete
  •  Ninety-nine (99) exposed horses have been located in Colorado
  •  Exposed horses to the index case have been positively identified in five other states: Arizona, Louisiana, Nevada, Oklahoma, and Wyoming
  •  Some of the exposed horses will be eligible for their final 60-day EIA re-test in the next week – CDA is working with those individual horse owners so that the hold orders can be released on a final negative test.

CDA is continuing to monitor compliance of one premises under quarantine and other premises that are under Hold Orders until the 60 day re-testing is completed. When violations are found relating to the quarantine / hold orders or if there is non-compliance of import requirements, the Department does have the legal authority to pursue civil fines or other legal action. CDA cannot release details on those situations that are under investigations or other activities that are being taken that will lead up to civil or legal action. 

As of September 12th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in:

  •  Only one confirmed positive EIA horse in Colorado which is the index case
  •  The index premises in Weld County is under a quarantine order; two associated premises are under hold orders 
  •  Thirty two (32) premises are under hold orders in 16 Colorado counties: Adams, Arapahoe, Crowley, Delta, Douglas, Eagle, Elbert, El Paso, Fremont, Gunnison, Larimer, Mesa, Moffat, Montrose, Phillips, Weld
  •  The counties are not under Hold Orders, only the premises within the counties are under the Hold Orders until re-testing is complete
  •  Sixty-six (66) exposed horses have been located in Colorado

A Quarantine is issued to a location that housed an EIA-infected horse. A Hold Order is issued when horses had contact with an infected horse but have not tested positive for EIA and are being held for re-testing. The Quarantine and Hold orders will remain in place until the exposed horses on the premises test negative at the 60-day re-test. This re-test date is 60 days from the last known date of exposure to the positive horse.

Both quarantine and hold orders, include movement restrictions. No horses are allowed to move off of the premises. For premises that are under a Hold Order, equids can be moved into that property but those new horses are also subject to the terms of the Hold Order and cannot be moved off the property until re-testing is completed.

The EIA positive horse was brought into Colorado from South Dakota, was EIA tested in Colorado, and found to be positive; it was euthanized August 28, 2018 as there is no cure or treatment for the disease.

What can horse owners do to protect their horses?

  •  Use good fly control for your horse and your premises – EIA is spread through deer flies and horse flies
  •  Keep your horse’s Coggins test current – it is recommended once a year and is required if the horse moves across state lines
  •  Work with your veterinarian to determine an appropriate isolation period for any new horses bought or moved in; along with an overall animal health plan for your horses
  •  Get a pre-purchase exam and Coggins test before buying a horse
  •  Follow State laws and regulations: CVI (certificate of veterinary inspection), Coggins test, and Brand Inspection before bringing horses into Colorado from another state

9/11/18: The 2018 Equine Infectious Anemia (EIA) Incident in Colorado has resulted in much more awareness on the need to test horses for EIA. This laboratory test is commonly called the Coggins test. It is important to know that the people who buy a horse are responsible for contacting a veterinarian so that a certificate of veterinary inspection (CVI) can be issued and a Coggins test completed. Anytime a horse moves to another state, both are needed.

In addition, the new buyers have the responsibility to get a brand inspection if the horse that they bought is then sold to another person, or if it is moved to another state, or moved more than 75 miles within the State of Colorado. Following these State rules will help prevent the spread of disease, locate horses when needed, and aid in documenting ownership. Violation of these laws can result in substantial fines.

 

As of September 10th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in:
• The index premises in Weld County is under a quarantine order; two associated premises are under hold orders
• Twenty-six (26) premises are under hold orders in 13 Colorado counties: Adams, Arapahoe, Crowley, Delta, Douglas, El Paso, Fremont, Gunnison, Larimer, Mesa, Moffat, Montrose, and Weld
• Fifty-seven (57) exposed horses have been located in Colorado

CDA is continuing to work to locate horses in Colorado that were exposed to the EIA-positive horse in addition to testing many of the exposed horses for EIA.

The one quarantined premises in Weld County and the premises directly associated with it have a higher degree of restrictions to control the EIA disease. Some of these are: 
• All horses coming into the premises cannot leave until all the re-testing is completed and tests are negative
• All horses coming into the premises must be tested for EIA
• All horses coming into the premises from other states must have a certificate of veterinary inspection
• A complete inventory of horses on the premises is monitored by CDA

 

9/7/18: The Colorado Department of Agriculture’s State Veterinarian’s Office is continuing their investigation into a Weld County horse that tested positive for Equine Infectious Anemia (EIA) in late August. With the help of records from CDA’s Brands Division and Rocky Mountain Regional Animal Health Laboratory, the State Veterinarian’s Office has determined that approximately 240 horses have been on the quarantined premises during the same time as the index positive animal. Approximately 100 of these horses were sent to 20 other states across the country and steps are being taken to locate, quarantine, and re-test those horses. At this time, no other horses have tested positive for EIA.

As of September 7th, 2018, the Equine Infectious Anemia (EIA) Incident in Colorado has resulted in: 
• The index premises in Weld County is under a quarantine order; two associated premises are under hold orders
• Fifteen (15) premises are under hold orders in nine Colorado counties – they are Adams, Arapahoe, Crowley, Delta, Douglas, El Paso, Mesa, Montrose, and Weld
• Thirty-seven (37) exposed horses have been located in Colorado
CDA is continuing to work to locate approximately 130-150 horses that were exposed to the EIA-positive horse and those horses went to different premises across Colorado. We have limited contact information for many of the people that purchased these horses. If you know anyone who purchased horses from the quarantined facility in Weld County between July 18th and August 20th, please contact the State Veterinarian’s Office at the Colorado Department of Agriculture at 303-869-9130.

 

9/5/18: In our active EIA investigation and tracing of horse movements from the EIA quarantined facility, we need to supplement the contact information we currently have. We do not have phone numbers or email addresses for some of the movements (brand inspections do not require this information). We are asking anyone who purchased horses from the quarantined facility in Weld County between July 18th and August 20th, 2018 to contact the State Veterinarian's office at the Colorado Department of Agriculture at 303-869-9130 so we can act more quickly than sending out a letter through the postal service to communicate with the new owners about the required testing needed.

 

8/31/18: If you have purchased a horse, pony, donkey, or mule from the quarantined premises in Weld County from July 18-August 20, 2018, please contact the State Veterinarian's Office at the Colorado Department of Agriculture at 303-869-9130. If you aren't sure and purchased a horse, pony, donkey, or mule in Weld County between those dates, you can contact us to find out if they did come from the quarantined premises.