where
S be the number of susceptible human,
E be the number of infectious human which in the
incubation period (exposed human population),
I be the number of infectious human,
R be the number of recovered human who are totally
immune to that strain ,
C be the number of recovered human who are partially
immune to that strain classes.
N is the total of human population,
n B is the birth rate of human population,
μ is the natural death rate of human population,
2 β is the transmission rate which the susceptible human
population become to exposed human,
φ is the transmission rate which the exposed human
population become to infectious human,
α is the transmission rate which the infectious human
population become to the recovered human who are totally
immune to that strain
whereS be the number of susceptible human,E be the number of infectious human which in theincubation period (exposed human population),I be the number of infectious human,R be the number of recovered human who are totallyimmune to that strain ,C be the number of recovered human who are partiallyimmune to that strain classes.N is the total of human population,n B is the birth rate of human population,μ is the natural death rate of human population,2 β is the transmission rate which the susceptible humanpopulation become to exposed human,φ is the transmission rate which the exposed humanpopulation become to infectious human,α is the transmission rate which the infectious humanpopulation become to the recovered human who are totallyimmune to that strain
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