Janet McElhaney, M.D., is vice president of research and scientific director, Health Sciences North Research Institute and a professor of medicine at Northern Ontario School of Medicine. Prof. McElhaney is a leading expert on the decline in function of the aging immune system (immunosenescence). Her research interests include the impact of immunosenescence on the immune responses to vaccination, immunologic biomarkers of protection mediated by vaccination, and how vaccination plays a role in preventing disability in older adults. She has over 25 years of experience in conducting clinical research studies and clinical trials, and participating in publication steering committees, data safety and monitoring boards, and research ethics boards for a variety of clinical trials. To date, she has published over 100 peer-reviewed papers, delivered over 200 invited presentations, two books and seven book chapters. Her research is supported by the Canadian Institutes for Health Research, the U.S. National Institutes of Health, The Northern Ontario Heritage Fund, and the Canadian Immunization Research Network.