HANDBOT: Apalapucia is under planet-wide quarantine. This is a kindness facility for those infected with Chen Seven.

(The Doctor covers his mouth and nose with his coat lapel.)

DOCTOR: What?

RORY: Chen Seven, hmm?

DOCTOR: The one day plague.

RORY: What, you get it for a day?

DOCTOR: No, you get it, and you die in a day.