Mathematical Modelling of COVID-19 Transmission in Kenya: A Model with Reinfection Transmission Mechanism

Table 1

Represent state variables of COVID-19 model equation (2).

S	Population of susceptible individuals
E	Population of individuals exposed to COVID-19
	Population of infectious asymptomatic individuals (manifest no symptoms)
	Population of infectious symptomatic individuals with mild symptoms (non-critical symptoms)
	Population of infectious symptomatic individuals with severe symptoms (critically ill)
	Population of infectious asymptomatic individuals isolated from the general population via contact tracing
H	Population of infectious individuals hospitalized due to COVID-19
	Population of recovered (tested negative) individuals with strong post COVID-19 protective immunity (protected against reinfection)
	Population of recovered individuals with weak or no COVID-19 protective immunity (partially protected against reinfection if exposed to COVID-19)