. 2018 Sep 12;14(9):e1007291. doi: 10.1371/journal.ppat.1007291

Table 1. Model parameters: Input (upper rows) and output (lower rows).

Notation	Name	Unit	H3N2	H1N1
R₀	Basic reproduction number	1^b	1.8^a	1.46^a
t_rec	Recovery time	day	5^a	5^a
U_b	Mutation rate per genome	1/t_rec\|yr	5 10⁻⁴\|0.036^c	8 10⁻⁴\|0.058^c
a	Crossimmunity distance	AA	15^c	14^c
K(u)	Crossimmunity function	1	\|u\|/(a + \|u\|)	\|u\|/(a + \|u\|)
N	Population size	1	10⁸	10⁸
β	Mutation distrib. parameter	1	2	2
σ	Average selection coefficient	1	0.048^d	0.028^d
$\frac{365 N_{i}}{t_{rec} N}$	Annual incidence	1/yr	0.07^d	0.04^d
c	Substitution rate	1/t_rec\|yr	0.036\|2.6^a	0.031\|2.26^a
T_MRCA2	Pairwise coalescent time	Year	3.03^a	4.59^a

^a Known from published data for influenza A strains H3N2 and H1N1 [7, 13, 30, 31]

^b Unit “1” stands for “dimensionless”.

^c Input parameter of the model which was adjusted to fit published data.

^d A value predicted for the best-fit parameter set