EHV-1 Update for Friday, April 17, 2015: The number of EHV-1 positive horses in Michigan has remained at four. Two positive horses (1 was already euthanized) at the Livingston County quarantined index farm and two positive horses at a quarantined Saginaw County farm. There have been no new cases of EHV-1 since April 3,2015. In an effort to assist individual horse owners, whose horses are currently housed at the quarantined facilities, the Michigan Department of Agriculture and Rural Development (MDARD) has allowed three horses quarantined at the above Saginaw County premises to move to isolated locations, one each to Midland, St. Clair and Genesee Counties this week. The horses moved are not the EHV-1 positive horses mentioned above, but may have been exposed to EHV-1 positive horses. An isolated location has no other horses on the premises or within a quarter of a mile of the premises. The three isolated locations are also under quarantine. The reason for allowing horses to move from one premises to another while remaining under quarantine, is that horses continue to have fevers at the Saginaw facility, which restarts the 28 day count for horses that have no fevers or symptoms suggestive of EHV-1. Moving a horse to an isolated location allows that horse to be potentially removed from quarantine sooner than if it had stayed at the original farm. There are also an additional two premises that remain under quarantine, one in Ionia County and one in Saginaw County, where horses tested negative for EHV-1, but were exposed to the index horse and exhibited fevers and/or symptoms that can be seen with EHV-1. With the three additional secure location quarantines, there are now seven quarantines for EHV-1 in Michigan. All horses at quarantined facilities are under quarantine until all horses have either had no fevers and/or clinical signs exhibited that are consistent with EHV-1 for 21 consecutive days and have subsequently tested negative for EHV-1 or have had no fevers and/or clinical signs exhibited that are consistent with EHV-1 for 28 consecutive days.