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Table 1 Syphilis model variables

From: Mathematical analysis and optimal control interventions for sex structured syphilis model with three stages of infection and loss of immunity

Variable Description
\(S_{m}(t)\) Susceptible males at time t
\(I_{mp}(t)\) Males with primary stage syphilis at time t
\(I_{ms}(t)\) Males with secondary stage syphilis at time t
\(L_{m}(t)\) Males with latent stage syphilis at time t
\(R_{m}(t)\) Recovered males from syphilis at time t
\(S_{f}(t)\) Susceptible females at time t
\(I_{fp}(t)\) Females with primary stage syphilis at time t
\(I_{fs}(t)\) Females with secondary stage syphilis at time t
\(L_{f}(t)\) Females with latent stage syphilis at time t
\(R_{f}(t)\) Recovered females from syphilis at time t