“The women in the kitchen sang: Sarampión toca la puerta. Viruela dice: ¿Quién es? Y Escarlatina contesta: ¡Aquí estamos los tres! The cook would sometimes shout a little madly, “Sing it again!” And the women would sing again: Measles knocks at the door. Smallpox asks, Who’s there? And Scarlet Fever replies: All three of us are here!”