TWiV notes the passing of Klaus Conzelmann, then reviews reverse-zoonoses of 2009 H1N1 pandemic influenza A viruses and evolution in United States swine, and reduction in dementia incidence in recipients of Zostavax. Hosts: Vincent Racaniello, Alan…

The TWiV team discusses Medusavirus, isolated from a hot spring in Japan, and induction of hallmarks of neurodegeneration by recurrent herpes simplex virus 1 infection of mice.