On Vaccination Strategies for a SISV Epidemic Model Guaranteeing the Nonexistence of Endemic Solutions

Table 1

Equilibrium points and their feasibility conditions.

Equilibrium point	Proportion of subpopulations	Feasibility conditions
DFE1
DFE2		(i); (ii)
DFE3
EE1		(i); (ii); (1); (2)
EE2		(i); (ii); otherwise
EE3; and/or; EE4
EE5		and  simultaneously; which is possible if