Dr. Wilmore C. Webley, Assoc. Professor & Assoc. Dean, Office of Inclusion & Engagement in the Graduate School at the University of Massachusetts Amherst. Dr. Webley has received a M.Sc. and Ph.D. in Microbiology at the University of Massachusetts Amherst, with expertise in immunology, infectious disease, host-pathogen interactions, and a concentration in vaccine development. Dr. Webley discusses the new bivalent BA.5 booster and the challenges the new variants impose. In addition, an overview is presented on the life cycle of viruses, their propensity for mutation and the ever-increasing myriad of SARS-CoV-2 variants which have evolved. An overview of the WHO classification of viruses is also given. Health Watch USA Meeting. Nov. 16, 2022.