Tony Schountz joins TWiV to explain the work of his laboratory showing that deer mice can be infected with and transmit SARS-CoV-2, and how his colony of Jamaican fruit bats is being used to understand their response to virus infections.

The TWiV team summarizes the discovery of Sin Nombre virus, and presents evidence that neurotropic flaviviruses can cause intestinal dysmotility syndromes after systemic infection of mice.

Vincent, Alan, Rich, and Kathy discuss recent outbreaks of hantavirus pulmonary syndrome in Yosemite National Park and novel swine-origin influenza in the US midwest, and isolation of the Heartland virus from two patients in Missouri with severe febrile illness.

Vincent, Dick, and Alan converse about hantavirus spread by large deer mice, why the 1918 influenza virus replicates in the lower respiratory tract, measles in Europe, and the growing resistance of influenza virus to antivirals.