American foulbrood (AFB) disease is the most serious brood disease of honey bees in New South Wales (NSW). It is caused by the bacteriumPaenibacillus larvae. In Australia it has been found in all states.
It is a notifiable disease under the NSW Apiaries Act 1985. There is a persistent low level of infection in NSW. Early and accurate diagnosis of this disease is essential if control is to be effective.