Strangles has been confirmed in a pony in Newport County, Rhode Island.
Strangles quarantines are in place at the race track and a stable in Ontario County, New York.
North Carolina reported its second case of EEE in the state for 2018.
A Maryland horse will be euthanized due to equine infectious anemia and the facility has been quarantined.
A neurologic EHV-1 horse was euthanized in Buffalo County, Nebraska.
Florida reported 14 EEE-positive horses in June.