Horse flu results not clear for a week

Tasmania's Department of Primary Industries says it will be another week before it's known whether equine influenza has entered the state.

The Department has received test results from Victoria for a horse in the state's north-west which has flu symptoms.

The Manager of BioSecurity, Alex Schaap, has told ABC Radio the results came back negative, contradicting the Department's positive result.

"We now need to go through a process of working through repeat testing, taking of further samples," Mr Schaap said.

"Perhaps even some sequencing work to see if we can determine a categorical result," he said.