The Dark Suffer

I can't remember what we were talking about. I think it was Nate's Tick. Or maybe it was about the rats in New York city escaping the subway... But I think it was more likely about Nate's Tick....

Anyway, he suddenly started talking about The Dark Suffer.

"You know, The Dark Suffer. Nick knows about it, right Nick?"

I thought it must be some Pokemon battle thing, but then Nick said "You know, when the fleas from rats made people sick?"

"Wait," I said. "Are you talking about the Black Plague?"

Recognition lit up both boy's faces as they nodded. "The Black Plague? That was hundreds of years ago. You don't really have to worry about that anymore."

The Dark Suffer?