A map on a display at the CDC’s in-house museum hides in plain sight what U.S. government authorities are reluctant to admit: the origin of the 2011 cholera epidemic in Haiti (a U.N. peacekeeping base housing a batallion from Nepal). All the more amazing by its juxtaposition with John Snow’s famous 1854 cholera map of London. It’s as if they wanted us to tell us something while being prevented from doing so.