Most poultry diseases commonly found in other poultry-producing countries have been recorded in New Zealand. The important exceptions, however, are fowl pest (Newcastle disease), and infectious bronchitis, which so far have not been diagnosed. A strict embargo on the importation of hatching eggs and live or dead poultry from countries other than Australia has been enforced since 1953 as a protection against the possible introduction of these diseases. Post mortem and field advisory services are given by the Department of Agriculture.