Testing, tracing and isolation in compartmental models
Fig 4
The effect of testing, tracing in a hypothetical population.
The dynamics presented here are the same as those of Fig 2 with a testing rate θ = 14−1days−1, meaning testing of infectious individuals on average once per two weeksonce per week. The rate of contact tracing is set at χ = 2−1days−1, meaning that it takes on average two days to trace a contact. A variety of values of tracing success rate, η are explored. Under these conditions, even a modest success rate of 30-40% enhances testing and results in a maximum of infectious individuals that is about half the magnitude with testing alone. The lower panel is, as above, the corresponding time-series for the reproduction number.