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Table 4 Basic parameters

From: Overcoming COVID-19 in China despite shortcomings of the public health system: what can we learn?

Constants Description Value Source
S 0 Population in t = 0 11,000,000  
f infection fatality rate 0.015 [58]+ p.i.a
e Average length of stay in exposed compartment 3 [59] + p.i.a
ins Average length of stay in compartment infectious but not sick 2 [59] + p.i.a
si average length of stay in compartment sick and infectious 11 [59] + p.i.a
sni average length of stay in compartment sick not infectious 7 [59] + p.i.a
\( \overline{R_0} \) Basic reproductive rate without intervention 2.5 [60]
\( \overline{R_i} \) Basic reproductive rate with intervention Scenario I: 2.5
Scenario II: 0.95
Scenario III: 2.5–0.95-2.5
Scenario IV: 2.5–0.95-1.5
assumption
d 1 last day without intervention 120 assumption
d 2 first day of maximum effect of intervention 150 assumption
d 3 last day of intervention 210 assumption
d 4 last day of effect of intervention 240 assumption
p infectivity 0.1 [61, 62]
  1. api: assumption based on private communication with Chinese colleagues