1. Center for Vaccinology, Department of Clinical Chemistry, Microbiology and Immunology; Ghent University; Gent Belgium
2. Microbiology and Immunology Department, Faculty of Medicine; Assuit University; Assuit Egypt
3. Microbiology and Immunology Department, Faculty of Medicine; Minia University; Minia Egypt
4. Microbiology Department; College of Pharmacy, Taif University; Taif Saudi Arabia