Hundreds of dead chickens found on Bali island resort have tested positive for the H5N1 strain of bird flu, an animal health official said Tuesday.

Around 300 birds died of the virus over the past week, said I Gusti Ngurah Sandjaja in Bali´s westernmost Jembrana district.

"We have carried out a rapid test and found that they were positively infected by the bird flu virus," Sandjaja said.

"Fortunately, there are no indications that the virus has spread to humans here."