My Sugar Sugar was feverish four days earlier and developed neurological signs on day four. Biosecurity procedures were implemented that day and the California Department of Agriculture was notified of a suspected case of EHV-1. The average incubation period for EHV-1 is 4 to 7 days, with the majority of cases being 3 to 8 days, but with some taking up to 14 days. All horses in the stable are being closely monitored and none of the others has exhibited signs of fever or illness.
Horsemen in the Santa Anita stable area are advised to be especially vigilant in this regard and to immediately notify the CHRB Official Veterinarian if they have any suspicious cases.