Sunday, January 18, 2026

Modelling the Proportion of Influenza Infections within Households during Pandemic and Non-Pandemic Years

Authors: Kin On Kwok, Gabriel M. Leung, Steven Riley

DOI: 10.1371/journal.pone.0022089

Abstract Summary

During pandemics, surprisingly similar proportions of influenza infections occur within households compared to seasonal flu years—around 30%—despite more household members being susceptible. This counterintuitive finding results from a trade-off: high community transmission during pandemics rapidly depletes household susceptibles before they infect each other.

Why Brain? 🧠

Study reveals household influenza transmission remains constant at ~30% during both pandemic and non-pandemic years, suggesting household-based mitigation strategies have similar effectiveness regardless of season.

License: CC BY.


The image is AI-generated for illustrative purposes only. Courtesy of Midjourney.

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