Existence and uniqueness of endemic states for an epidemic model with external force of infection
Commun. Korean Math. Soc. 2002 Vol. 17, No. 1, 175-187 Printed March 1, 2002
Youngjoon Cha Sejong University
Abstract : The existence and uniqueness of steady states for the age structured $S$-$I$-$R$ epidemic model is considered. Intercohort form with external force is considered for the force of infection. Existence is obtained for nonvanishing external force of infection. Uniqueness is shown for the case where there is no vertical transmission of the disease.
Keywords : epidemic, endemic, $S$-$I$-$R$, existence, uniqueness, intercohort, external force