Sure you can watch Contagion, Outbreak , or The Andromeda Strain, if you want. After those three I thought of this film. My favorite of Roger Corman's Poe series. A combining of two Poe stories, the title Masque... , and Hop Frog with a bit of a Ville D'Isle Adams tale.

Vincent Price in a most wicked performance as the Satanic Prince Prospero hosts a wild party while the Red Plague ravages the countryside. That is until a red clad stranger arrived. I'll describe it as a gothic Eyes Wide Shut with the feel of Corman's The Trip. This is what the Black Death might have felt like all those years ago