Occurrence: Worldwide. Species affected: All. Age affected: 1-3 weeks, adults and birds in lay

Causes: Picornavirus.

Effects: Young birds - drowsiness, lack of coordination, unsteady gait, 5-10% mortality. In adults there is a drop in egg production.

AE is a peracute disease affecting all poultry species. Young birds from one and three weeks of age and adult birds in lay are affected. The AE virus is a small RNA picornav...