Everything we know about greyscale — the gruesome disease on ‘Game of Thrones'

 There's more to worry about in Westeros than just warring houses and White Walkers. A major character on "Game of Thrones" recently contracted a nasty disease that turns your body to stone, and he's now in search of a cure. Greyscale, as it is known, has been referenced a number of times before in the show and books. Here's everything we know about infectious disease. 

Produced by Chris Snyder

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