TWiV discusses whether or not Omicron should be designated a new serotype of SARS-CoV-2, and the finding that amino acid changes that adapt SARS-CoV-2 to mink or ferret do not increase fitness in the human airway. Hosts: Vincent Racaniello, Alan Dove, and Rich Condit Subscribe (free): Apple Podcasts, Google Podcasts, RSS, email Become a patron of TWiV! Links for this episode ABRCMS ePoster Spring Symposium for Emerging Scientists ASV Annual Meeting Registration (ASV) Microbiology & Immunology at LSU Health Is Omicron a new serotype? (Nat Rev Micr) Adaptation of SARS-CoV-2 to mink/ferret (Cell Rep) Letters read on TWiV 871 Timestamps by Jolene. Thanks! Weekly Picks Alan – Which Immune Cell Are You? and Michaeleen Doucleff’s article Rich – Vaccinated: One Man’s Quest to Defeat the World’s Deadliest Diseases by Paul A. Offit Vincent – Ebola on Canvas Listener Picks Les – Ologies podcast Intro music is by Ronald Jenkees Send your virology questions and comments to [email protected]