Table 1

Time gained for boosting (in days) through TTI with different levels of advance warning


Use case 2b (TTI with surveillance)Use case 2a (TTI without surveillance)
Testing level (share of symptomatic cases/identified contacts)
80%60%40%20%10%5%80%60%40%20%10%5%
Share of contacts traced75%Isolation/
quarantine rates
75%4.172.701.560.680.310.151.370.890.520.230.100.05
50%2.601.731.020.450.210.100.860.580.340.150.070.03
25%1.210.830.500.220.100.050.400.280.170.070.030.02
50%75%3.732.471.460.650.310.151.230.820.490.220.100.05
50%2.341.590.960.430.200.100.770.530.320.140.070.03
25%1.100.770.470.210.100.050.370.260.160.070.030.02
25%75%3.252.221.360.630.300.151.070.740.450.210.100.05
50%2.051.430.890.420.200.100.680.480.300.140.070.03
25%0.970.690.440.210.100.050.320.230.150.070.030.02
0%75%2.711.951.250.600.300.150.890.650.420.200.100.05
50%1.711.250.810.400.200.100.570.420.270.130.070.03
25%0.810.600.400.200.100.050.270.200.130.070.030.02
  • Source: authors’ simulations using the model in online supplemental appendix A.

  • TTI, testing, tracing and isolation.