seir.mod

@model:3.1.1=SEIR "SEIR Epidemic model"
 s=item, t=second, v=litre, e=item
@compartments
 Pop
@species
 Pop:S=100 s
 Pop:E=0 s	  
 Pop:I=5 s
 Pop:R=0 s
@reactions
@r=Infection
 S + I -> E + I
 beta*S*I : beta=0.1
@r=Transition
 E -> I
 sigma*E : sigma=0.2
@r=Removal
 I -> R
 gamma*I : gamma=0.5