For the past three decades, David Younger MD MPH MS, has been involved in the field of Neurology. His work has centered on Neuro-Immunology and more specifically, elucidating the importance of the human microbiome to health and disease. Medical scientists like Dr. Younger have learned that human beings are superorganisms integrating the identity, function and immunity of resident bacterial, while prepared by their innate and adaptive immune systems, to deal with invading organisms. In keeping with the dynamic relation of infection, immunity and inflammation. Post-infectious neurological illnesses of varied types like neurological Lyme disease arise when protective immunity becomes the source of autoimmunity, conditioned by environmental and genetic factors.