S. I B. 103 a2 Q A pandemic model is given schematically. H(t) indicates healthy, I(t) infected, Q(t) quarantined, and G(t) hospitalised individuals. Also, A is the birth rate, B is the contact rate...

Extracted text: S. I B. 103 a2 Q A pandemic model is given schematically. H(t) indicates healthy, I(t) infected, Q(t) quarantined, and G(t) hospitalised individuals. Also, A is the birth rate, B is the contact rate with the infected individual, a:(i = 1,2, 3, 4, 5, 6, 7) is the rate of leaving the current group, C is the natural death rate, and C is the death rate from the disease. Write the equations that model the pandemic.