Home with the flu (or something like it)

This month I am living in a plague house. Someone should mark the door posts.  Or fly a yellow quarantine flag over the house.  My son came home from Singapore, where he is working for a start up, but he did not bring home some exotic communicable disease like the Hong Kong flu.  No, he came home and went to visit friends of his who have a toddler.  And toddlers go to day care, where they become walking petri dishes, petri dishes that somehow are inoculated with every virus known to science (and some as yet unknown) within a 100 mile radius.