Horses at Broughton Vale near Berry, Moonbi near Tamworth, Moree, Wyong, Wilberforce, and Cattai have tested positive to the equine influenza virus, according to the release from the New South Wales (NSW) Department of Primary Industries. The unofficial tally of sick horses was reported to be more than 150 on Sunday in Australia.

NSW chief veterinary officer Dr. Bruce Christie said surveillance teams based at the State Disease Control Centre found sick horses by tracing suspect horses that had been in contact with the infected horses at Centennial Park.

“All confirmed cases are being kept under stringent quarantine and closely monitored until they fully recover,” Christie said. “The new cases highlight the critical need for movement restrictions as just one infected horse can infect others with the virus.To eliminate the spread of equine influenza, it’s essential horse owners support the current standstill which has been in place since Saturday.”

Horses, ponies, and donkeys cannot be moved anywhere in New South Wales, and restrictions are in place for horse vans and trailers, which can spread the virus via infected material. Racing has been halted everywhere in the country except for the Northern Territory. Three horses have reportedly tested positive in Queensland, and others are undergoing testing