'the process by which an infectious disease establishes itself in a new population (or at a sufficiently higher rate? higher prevalence and/or higher incidence)'-ID[O]:0000101: the process by which an infectious disease establishes itself in a new population (or at a sufficiently higher rate? higher prevalence and/or higher incidence)

id 'emergence'-ID[O]:0000101 from IDO 2007. May have replacement - TBD