This is ominous Zebra herpes virus kills zoo polar bears | Not Exactly Rocket Science | Discover Magazine (for those who may not know the article's author -- not the researcher the article is based on -- Ed Yong is a highly respected science journalist)
Agreed - any infection that crosses species boundaries is usually really nasty, like Ebola, Green Monkey Fever, Flu and the majority of the 'Pox' diseases. Scary stuff for captive animal keepers
When I first read the post title, I thought it said lethal mix of HERPS. I was thinking someone was going to try to put garter snakes in with king cobras or something.