Three horses on separate properties in southeast Queensland were confirmed dead from Hendra virus in late June 2011. A timeline shows that a vet first euthanized a horse at a property near Brisbane on June 20th believing it had colic. This was followed by another sick horse at a separate property that was taken to a third property where it died. Blood tests later confirmed the horse had Hendra virus. Additional horses then became sick and were euthanized at the first property, with blood tests confirming Hendra virus in those cases as well. People exposed at the various properties were monitored with blood tests.