TWiV reviews measles outbreaks in England and Europe, 2 fatal Nipah virus cases in Bangladesh, yellow fever outbreak in Sudan, and discuss how the type of immunodeficiency influences the outcome of SARS-CoV-2 infection, and programming of alveolar macrophages by intestinal bacteria that influences severity of respiratory viral infection.

Vincent, Alan, Matt and Kathy review isolation of a new coronavirus from two patients in the Middle East, and expansion of the enteric virome during simian AIDS.