COB was established in 1994, and throughout years and due to the sequential successes COB has made, the annual number of events has increased and reached more than 35 events per year.

COB takes over the organizing of conferences and medical congresses from 1994 till now for the following Societies and Associations:

• Egyptian Society of Surgeons
• Egyptian Group of Colon and Rectal Surgeons
• Egyptian Group of  Hepato-Pancreato-Biliary Surgeons
• Egyptian Group for Surgical Sciences and Research
• Egyptian Group of Micro and Hand Surgery
• Egyptian Group of Lapara Endoscopic Surgeons
• Egyptian Group of Trauma and Emergency Surgeons
• Egyptian Society of Radiology and Nuclear Medicine
• Pan Arab Association of Surgeons
• Egyptian Oto-Rhino-Laryngology Society
• Egyptian Scoliosis Society
• Egyptian Scientific Society of Bronchology
• Egyptian Medical Association for the Study of Obesity
• Modern Egyptian Society of Internists
• Pan Arab Rhinology Society
• Egyptian Group for Diseases of  Nose and Paranasal Sinuses
• Egyptian Arab Society of Otology and Audiology
• Pediatric Emergency Society
• Egyptian Pediatric Surgeons Associations
• Afro Asian Society for Cosmetic Dermatology and Laser
• Egyptian Society for Allergy and Immunology
• ENT department – Cairo University Faculty of Medicine
• ENT department- Tanta University Faculty of Medicine
• ENT department- Al Azhar University Faculty of Medicine
• International Academy of Pathology- Arab Division
• Egyptian Society of Dermatology and Venereology
• International Association of Surgery, Gastrointestinalmotility and Oncology "IASGO"
• Military Medical Academy
• Pan Arab Spine Society