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. Author manuscript; available in PMC: 2019 Oct 10.
Published in final edited form as: Am J Prev Med. 2016 Mar 4;51(2):216–224. doi: 10.1016/j.amepre.2016.01.007

Figure 1.

Figure 1.

Schematic for exploring the cost-effectiveness of an Opt-Out Testing strategy for chlamydia screening.

Note: Infected individuals move into the exposed (E, incubation compartment). From E, they move to either the infectious asymptomatic (Ia or infectious symptomatic (Is) based on the probability of being symptomatic and the duration of incubation. Infected persons may recover naturally and move to the infection-conferred immunity compartment R, be treated and move back to the susceptible compartment S, or develop chlamydia-associated complications and enter the sequelae compartment Z.

S, susceptible; E, exposed; Ia, infectious asymptomatic; Is, infectious symptomatic; R, infection-conferred immunity; Z, sequelae.