Effects of vaccination and population structure on influenza epidemic spread in the presence of two circulating strains

Table 4 Total attack rates for mean field model

δ	T*	Attack rates: Prior vaccination V₀ = 0.2, ω₀ = 0.0			Attack rates: Vacc. during epidemic: V₀ = 0, ω₀ = 1.0
		Strain 1+2	Strain-1	Strain-2	Strain 1+2	Strain-1	Strain-2
0.9	10	0.334151	0.319792	0.163241	0.289341	0.370007	0.125953
0.9	60	0.335045	0.328586	0.152525	0.290336	0.372194	0.123627
0.4	10	0.031496	0.623353	0.038615	0.007640	0.653452	0.009348
0.4	60	0.001286	0.664957	0.001463	0.000537	0.664308	0.000645

For the mean field model, the initial conditions were chosen to be compatible with those of the 1-age class model - see Appendix and Table 3. The initial number of strain-1 and strain-2 infections (introduced at times t = 0 and T*, respectively) in a population of size N =10,000, is 67 and 12, respectively.

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