A novel deterministic model for the transmission dynamics of Lassa Haemorrhagic
Fever (LHF) is designed and deployed to qualitatively assess the role of the impact of
reduced relative infection of the human-human mode of transmission compared to the
rodent-human mode of transmission on the population population dynamics for Lassa
Haemorrhagic Fever disease burden. The model is shown to undergo the backward
bifurcation phenomenon due to the presence of the parameter which accounts for the rate at
which temporary immunity wanes. A unique threshold for the rate at which temporary

immunity wanes was also obtained. A special case of the model showed that the disease-
free equilibrium was globally asymptotically stable in the absence of the rate at which

temporary immunity wanes