Research Article

Conflicts of Interest during Contact Investigations: A Game-Theoretic Analysis

Table 2

Numerical scenarios showing the percent reduction in disease transmission achievable by contact investigation and postexposure prophylaxis, assuming complete disclosure. The latency column provides the ratio of the expected duration of the latent period relative to the infectious period, the tracing column is the ratio of the duration of the infectious period to the expected waiting time to be found from a single disclosure, and the prophylaxis column is the ratio of the duration of the latent period to the waiting time to postexposure prophylaxis following contact investigation. The percent decline in transmission within the group is shown for low, medium, and high within-group transmission ( , 1, and 1.9). No protective effect against infection was assumed for susceptible individuals who were interviewed by contact investigators ( ).

Scenario Latency Tracing Prophylaxis Reduction (%)

1 0.1 0.1 0.1 0.543%, 1.15%, 0.0832%
2 10 0.1 0.1 6.89%, 12.7%, 7.01%
3 0.1 10 0.1 4.36%, 13.7%, 3.43%
4 10 10 0.1 12%, 21.6%, 11.9%
5 0.1 0.1 10 0.791%, 1.76%, 0.267%
6 10 0.1 10 47.8%, 53.1%, 49.8%
7 0.1 10 10 8.64%, 19%, 9.71%
8 10 10 10 82.8%, 84.9%, 83.1%