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Table 1 Parameter values used in numerical simulations

From: A note on the impact of late diagnosis on HIV/AIDS dynamics: a mathematical modelling approach

Parameter Definition Range Value Source
\(\beta _1\) Contact for individuals in S with those in \(I_1\) 0-1 0.912 [8]
\(\beta _2\) Contact for individuals in S with those in \(I_2\) 0-1 0.894 [8]
\(\beta _3\) Contact for individuals in S with those in \(I_{A1}\) \(0{-}1\) 0.095 [8]
\(\beta _4\) Contact for individuals in S with those in \(I_{A2}\) \(0{-}1\) 0.091 [8]
\(\sigma _1\) Progression from \(I_1\) to \(I_{A1}\) \(0.01{-}1\) 0.084 [8]
\(\sigma _2\) Progression from \(I_2\) to \(I_{A2}\) \(0{-}1\) 0.1 Assumed
\(\delta\) Progression from \(I_1\) to \(I_{2}\) \(0.01{-}1\) 1.0 [8]
\(\gamma _1\) Progression from \(I_{A1}\) to \(I_{A2}\) \(0.01{-}1\) 0.096 [8]
\(\gamma _2\) Progression from \(I_{A2}\) to \(I_{A1}\) \(0.1{-}1\) 0.112 [8]
r Effect of late initiation into ART \(0{-}1\) 0.45 Assumed
\(\omega _1\) Disease related death of individuals in \(I_2\) \(0{-}1\) 0.089 [7]
\(\omega _2\) Disease related death of individuals in \(I_{A2}\) \(0{-}1\) 0.095 [7]
\(\Lambda\) Recruitment rate into S \(0{-}1\) 0.0239 [12,13,14]
\(\mu\) Natural death rate \(0{-}1\) 0.0172 [14]
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