Research Article
A Fractional-Order Model for HIV Dynamics in a Two-Sex Population
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 |  | Description | Parameter |  | 
 |  | Recruitment rate |  |  | Proportion of the recruitment rate |  |  | Natural death rate |  |  | Transmission rate by an infected male |  |  | Transmission rate by an infected female |  |  | Progression rate from male HIV infection to AIDS |  |  | Progression rate from female HIV infection to AIDS |  |  | AIDS disease induced death rate |  |  | Proportion of the efficacy of ART treatment for HIV infection |  |  | 
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