Fig. 2

The modified SEIR (Susceptible-Exposed-Infected-Removed) model to predict COVID-19 infection and outcome. S: susceptible, E1: patients consuming minerals above the cut-off, E2: patients consuming minerals below the cut-off, I1: patients with positive PCR results for COVID-19, I2: patients with negative PCR results for COVID-19, H: hospitalized patients, OU: patients who were managed in outpatient setting, α: Rate of transmission from S to E1, 1-α: Rate of transmission from S to E2, m: rate of death in susceptible individuals,\({\gamma }_{1}\):Rate of transmission from E1 to I1,\({\gamma }_{2}:\) Rate of transmission from E1 to I2,\({\gamma }_{3}\):Rate of transmission from E2 to I1, \({\gamma }_{4}:\) Rate of transmission from E2 to I2 \(, {\beta }_{1}:\) Rate of transmission from I1 to H, \({\beta }_{2:}\) Rate of transmission from I1 to OU, \({\beta }_{3}:\) Rate of transmission from I2 to OU