Table 6. Estimated secondary attack rates without and with vaccination.

The vaccine is assumed to be 90% effective (VE_S = 0.9) in preventing infection and moderately effective reducing infectiousness (VE_I = 0.5). Shown are inferred secondary attack rates (SARs) for various household compositions. Estimates are represented by posterior medians and 2.5% and 97.5% posterior quantiles. See Table 5 for details, and results without vaccination and with vaccination with a vaccine that does not reduce infectiousness.

Household composition (numbers)			Primary case	Vaccination scenario
children	adolescents	adults		Adults		Adults and adolescents
1	0	1	child	0.029	(0.014-0.050)	0.029	(0.014-0.050)
1	0	1	adult	0.061	(0.029-0.10)	NA
0	1	1	adolescent	0.011	(0.0012-0.035)	0.0054	(0.0006-0.017)
0	1	1	adult	0.061	(0.029-0.10)	0.0063	(0.0029-0.0.011)
2	0	2	child	0.24	(0.16-0.31)	NA
2	0	2	adult	0.068	(0.033-0.11)	NA
0	2	2	adolescent	0.042	(0.0047-0.13)	0.0055	(0.0006-0.018)
0	2	2	adult	0.047	(0.023-0.081)	0.0064	(0.0030-0.011)
2	2	2	child	0.31	(0.21-0.42)	0.16	(0.11-0.21)
2	2	2	adolescent	0.023	(0.0024-0.062)	0.0080	(0.0009-0.023)
2	2	2	adult	0.096	(0.047-0.16)	0.046	(0.023-0.075)