☆ 4.6 Article

On SIR-type epidemiological models and population heterogeneity effects

PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS (2023)

Individual variation in susceptibility or exposure to SARS-CoV-2 lowers the herd immunity threshold

M. Gabriela M. Gomes et al.

Summary: Individual variation in susceptibility and exposure is influenced by natural infection, which accelerates the acquisition of immunity and reduces the thresholds for herd immunity and epidemic sizes. However, public health policies rely on mathematical models that neglect significant variation, leading to inflated disease burdens and overestimated impact of interventions.

JOURNAL OF THEORETICAL BIOLOGY (2022)

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Article Biology

Herd immunity under individual variation and reinfection

Antonio Montalban et al.

Summary: This study examines a susceptible-exposed-infected-recovered (SEIR) model with heterogeneity in susceptibility and exposure to infection. The research finds that epidemic growth can be effectively suppressed when the percentage of the population with acquired immunity surpasses the herd immunity threshold, taking into account the heterogeneity assumption.

JOURNAL OF MATHEMATICAL BIOLOGY (2022)

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Article Multidisciplinary Sciences