Police greys get horse flu vaccinations

South Australia's police horses will have an extra bit of defence after today, because they are receiving their first dose of the equine influenza vaccine.

The 35 police greys are expected to have developed a resistance within weeks.

Chief veterinary officer Rob Rahaley says the vaccinations are a precaution, as South Australia has remained free of any cases of horse flu.

"We're vaccinating the police horses really as a risk mitigation strategy, just to make sure that in the unlikely event that equine influenza comes into South Australia that the horses won't get sick and will still be able to operate," he said.