“She murmured, We could always blame the stars. I beg your pardon, Doctor? That's what influenza means, she said. Influenza delle stelle—the influence of the stars. Medieval Italians thought the illness proved that the heavens were governing their fates, that people were quite literally star-crossed. I pictured that, the celestial bodies trying to fly us like upsidedown kites. Or perhaps just yanking on us for their obscure amusement.”