T1. Each March for the last decade, I have given a visiting lecture at @GWpublichealth "Mathematical Modeling of Infectious Disease Epidemiology", which combines my love of math w/ work relevant to my life in the #PedsICU (disclaimer: I am not an ID doc) T2. This year unfortunately, we weren't able to find a date that worked but given the emergence of #COVID19, I thought it might be worthwhile providing a little context to some of the terms being thrown around the interwebs.