The effect of vaccination on the spread of COVID 19 with asymptomatic cases through intermediate media.

In early 2020, Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) was found in Wuhan, China. The virus causes the disease named COVID 19 and this disease was declared as pandemic. Vaccines helped prevent the spread of the disease, while the intermediary media that transmits the virus expands the spread of COVID 19. This paper constructed the model and analyzed the effects of vaccination on the spread of the virus COVID 19 with asymptomatic cases through intermediary media. It is assumed that the vaccine is given only to susceptible individuals, and individuals who receive the vaccine will be resistant and cannot be infected with COVID 19. The Runge Kutta method is used to solve the differential equations, and dynamical system is used to analyze the model. The numerical simulation shows that the vaccine effectively prevents the spread of COVID 19 with asymptomatic cases through intermediary media. However, there is a need for further review regarding the effect of vaccination that does not make recipients resistant to COVID 19. [ABSTRACT FROM AUTHOR]