Late last month the deadly disease was detected in an unvaccinated mob of ewes and lambs on a Central West property with a previous history of anthrax.

The ewes had not been vaccinated but biosecurity measures, including stock movement restrictions and vaccination of remaining livestock, were immediately imposed.

This time last year anthrax had been detected on a Central Tablelands property.

NSW DPI senior veterinary officer Graham Bailey said it served as a timely reminder for producers in anthrax areas.

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"Cases of anthrax in NSW tend to occur in an area which runs through the centre of the state, between Bourke and Moree in the north, to Albury and Deniliquin in the south," Dr Bailey said.

"Anthrax can be prevented by annual vaccination of cattle and sheep. Producers in high-risk locations are encouraged to consider vaccination."

"Ingestion of soil by sheep, cattle and other ruminants is one of the key risk factors for anthrax."

LLS Animal Biosecurity and Welfare business partner, Scott Ison, said farmers can apply to use the anthrax vaccine through their LLS district veterinarian.

"Once authorised, applicants can place an order for the vaccine with their local rural supplier or private veterinarian," Dr Ison said.

Anthrax must be reported immediately to the Emergency Animal Disease Hotline by calling 1800 675 888.