Parameter | Description |
| The recruitment rate of the susceptible CD4+ T-cells per unit time. |
| The decay rate of the susceptible CD4+ T-cells. |
| The infection rate of the CD4+ T-cells by the virus. |
| The natural death rate of the infected CD4+ T-cells. |
| The HIV virions generation rate from the infected CD4+ T-cells. |
| The death rate of the infectious virus. |
| The rate at which the infected cells are eliminated by the activated CD8+ T-cells. |
| The recruitment rate of the CD8+ T-cells per unit time. |
| The death rate of the CD8+ T-cells. |
| The activation rate of the CD8+ T-cells due to the presence the infected CD4+ T-cells. |
| The decay rate at of the activated defence cells decay per unit time. |