We emphasize that correlations between infection states in both the SIS and SIR model are always positive and that the title of the article "Nodal infection in Markovian susceptible-infected-susceptible and susceptible-infected-removed epidemics on networks are non-negatively correlated" [Phys. Rev. E 89, 052802 (2014)PLEEE81539-375510.1103/PhysRevE.89.052802] is correct. The history and motivation that led to the proof is placed in perspective.
|Number of pages||2|
|Journal||Physical Review E|
|Publication status||Published - 2018|