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. 2023 Sep 15;193(2):339–347. doi: 10.1093/aje/kwad185

Table 1.

SEIR Transmission Model Parameters

Parameter Symbol Value Source: First Author, Year (Reference No.)
Probability of transmission per contact Inline graphic 0.015 Davies, 2020 (26)
Contact rate per day Inline graphic Supplementary dataa Prem, 2021 (8)
Duration of pre-infectious (latent) period 1/Inline graphic 5.5 days Xin, 2022 (27), Cheng, 2021 (28)
Duration of infectious period 1/Inline graphic 10 days Walsh, 2020 (29)
Population size Inline graphic Supplementary dataa Prem, 2021 (8)

Abbreviation: SEIR, susceptible-exposed-infectious-recovered.

a Parameter varies by age group.