Variable

Baseline value

Reference

$S\left(0\right)$

170, 123, 640

Assumed

$I\left(0\right)$

100

Assumed

$R\left(0\right)$

0

Assumed

$B\left(0\right)$

1,000,000,000

Assumed

$N\left(0\right)$

170, 123, 740

CIA (2011)