Research Fellow, University of New South Wales

University of Texas at San Antonio

Associate Professor of Medical Microbiology, University of Abuja

Professor of Microbiology, Panjab University, Chandigarh

Ramathibodi Hospital, Mahidol University

Professor at Sulaimani Polytechnic University.

Faculty of medicine, fayoum university

Professor of Medical Microbiology and Immunology (Allergy and Immunology)

Faculty of medicine and health sciences Sana'a University

Zarqa University