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Table 2 Parameters for model (1) and their descriptions

From: Mathematical model of the spread of COVID-19 in Plateau State, Nigeria



\(\beta_{E} ,\beta_{{I_{A} }} ,\beta_{{I_{S} }}\)

Rate of infection transmission among the exposed transmitting, asymptomatic infectious and symptomatic infectious groups

\(c_{f} ,c_{d}\)

Proportion of people that adopt control measures using face masks and practice of social distancing


Fraction of exposed group that becomes symptomatic infectious undetected group \(I_{S}\)

\(1 - f\)

Fraction of exposed group that becomes asymptomatic infectious undetected group \(I_{A}\)


Rate of progression of exposed group E to fully infectious groups \(I_{S}\),\(I_{A}\)

\(\alpha_{1} ,\alpha_{2}\)

Rate at which people are quarantined from both asymptomatic and symptomatic infectious groups \(I_{A}\),\(I_{S} .\)

\(\gamma ,r_{1} ,r_{2}\)

Recovery rates from quarantined, asymptomatic and symptomatic groups, respectively

\(\pi ,\mu ,\mu_{i} (i = 1,2)\)

Recruitment through births, natural death and deaths from COVID-19, respectively