A compartmental model describing the transmission dynamics of MDROs in a 600-bed hospital.

<p>The arrows and parameter values correspond to entry and exit from the 6 compartments (-susceptible patients receiving antibiotics, -susceptible patients not receiving antibiotics, -patients infected with a non-resistant strain, -patients colonized with an MDRO that are receiving antibiotics, -patients colonized with an MDRO not receiving antibiotics, and -patients infected with an MDRO). The following parameters were used: , percentage of patients being admitted to each compartment; 1/, length of hospital stay; , rate that patients start receiving antibiotics; -rate that patients discontinue antibiotics; , rate that colonized patients become infected; , rate that infected patients are successfully treated.