Table 4.

Parameters for polio and measles. The disease transmission rate r is calculated from the basic reproduction number R₀, disease recovery rate g and birth rate b using eqn (4). Polio R₀, measles R₀ and measles g are taken from Anderson and May (1991). Polio g is from Tebbens et al. (2005). The value of b is from Hamilton et al. (2015). The value s = 0 is chosen for simplicity, and we expect s to be low in real populations. The value of v was chosen so that it takes about 7 days on average for a newly pro-vaccine individual to become vaccinated. The parameters r, g, v, and s are reported in units of days⁻¹; b uses units of per capita births per day. R₀ is dimensionless. The values in the table were used to produce Figure 3

Parameter	Polio	Measles
R0	6	15
b	3.6 × 10−5	3.6 × 10−5
r	0.17	2.14
g	0.029	0.14
v	0.14	0.14
s	0	0