My research interests are in the field of Bacterial Pathogenesis and specifically in the study of intracellularly growing bacteria, how these parasites interact with host cells and development of diagnostic assays. I completed B.Sc. and M.Sc. studies in Biochemistry at the University of Nairobi, and a PhD in Microbiology at the University of British Columbia. As a PhD student I studied the immunochemistry of bacterial lipopolyshaccharides and it was then I became interested in Microbial pathogenesis and immunology. My interests in bacterial pathogenesis were strongly influenced by my PhD advisor Dr. REW Hancock. My current research focuses on Mycobacterium avium subspecies paratuberculosis to understand at the molecular level, the genes and properties that enable this bacterium to growth within the mammalian macrophage cells.
I am a member of several scientific associations including, the International Association for Paratuberculosis and currently is on the Board of the IAP, the American Society of Microbiology (ASM) and the Canadian Society for Microbiology. I am on the Editorial Board for Journal of Clinical Microbiology, and a Member of the ASM Task Force for Africa.