Dr. Aziz is the avian pathologist of the Veterinary Diagnostic Laboratory System of the State of North Carolina, USA. He is responsible for necropsy and histopathology of avian diagnostic submissions. He is internationally regarded for his expertise in the diagnosis of poultry diseases, particularly in the field of diagnostic avian pathology (gross pathology and histopathology). Dr. Aziz authored two books: Avian Histopathology and Gross Pathology of Avian Diseases: Text and Atlas. He is a frequent speaker about diagnosis and diagnostic poultry pathology at workshops and conferences.