Type the abstract here The aim of this paper is to investigate and analyze the transmission dynamics of infectious diseases in human population. We have formulated a non-linear SIRS model to study the role of awareness programs by mass-media in reducing the transmission of infectious diseases. The analysis shows that the awareness by mass-media plays a constructive role in the dissemination of knowledge/information and has positive impact in the reduction of disease transmission. Numerical simulations are performed to support and verify the analytical results.