Chief, Division of Hematology/Immunology/Transfusion, at Sidra Medicine and Clinical Professor in Immunopathology, Qatar University. Yousuf studied medicine at Cambridge University and Guy’s & St Thomas’ Hospitals, qualifying in 1993 with Distinctions in Medicine and Pathology. He was Consultant Immunologist at Surrey Pathology Services 2004-18 and Clinical Lead in Immunology at Guy’s & St Thomas’ Hospitals, London 2006-14.

He was previously Chair of the Clinical Immunology Committee of the British Society for Allergy and Clinical Immunology, and is currently Country Advisor for Qatar for the Royal College of Pathologists. He is Steering Committee Chair for the “BASICS” project developing international recommendations for hypogammaglobulinemia secondary to B-cell therapies. He is co-Lead of the Sidra Immune Dysregulation Clinical Research Program. He has authored 100 publications and chapters, and received grant awards totaling $3.7 million.