Table 1.

Simulation details.

	no. scenarios	details
reinfection duration, reinfection rate and clearance probabilitya	2	scenario 1:
		—mean duration = 1 month  —mean rate = 109 per 100 PY  —clearance probability = 0.93
		scenario 2:
		—mean duration = 2 months  —mean rate = 72 per 100 PY  —clearance probability = 0.89
no. participants	3	16, 46, 100
test interval	4	0.5, 1, 2, 4 months
repetitions	100
total no. simulations	2400	2 × 3 × 4 × 100

^aReinfection duration is modelled using a gamma distribution with variance equal to 0.5 and 2 for scenarios 1 and 2, respectively. Time to reinfection is modelled using an exponential distribution with mean time to reinfection equal to the inverse of the mean rate of reinfection, and variance equal to the inverse of the mean rate of reinfection squared.