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Sensitivity of Household Transmission to Household Contact Structure and Size

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  • Achla Marathe
  • Bryan Lewis
  • Jiangzhuo Chen
  • Stephen Eubank

Abstract

Objective: Study the influence of household contact structure on the spread of an influenza-like illness. Examine whether changes to in-home care giving arrangements can significantly affect the household transmission counts. Method: We simulate two different behaviors for the symptomatic person; either s/he remains at home in contact with everyone else in the household or s/he remains at home in contact with only the primary caregiver in the household. The two different cases are referred to as full mixing and single caregiver, respectively. Results: The results show that the household’s cumulative transmission count is lower in case of a single caregiver configuration than in the full mixing case. The household transmissions vary almost linearly with the household size in both single caregiver and full mixing cases. However the difference in household transmissions due to the difference in household structure grows with the household size especially in case of moderate flu. Conclusions: These results suggest that details about human behavior and household structure do matter in epidemiological models. The policy of home isolation of the sick has significant effect on the household transmission count depending upon the household size.

Suggested Citation

  • Achla Marathe & Bryan Lewis & Jiangzhuo Chen & Stephen Eubank, 2011. "Sensitivity of Household Transmission to Household Contact Structure and Size," PLOS ONE, Public Library of Science, vol. 6(8), pages 1-7, August.
    • Handle: RePEc:plo:pone00:0022461
    DOI: 10.1371/journal.pone.0022461
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    References listed on IDEAS

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    1. Neil M. Ferguson & Derek A. T. Cummings & Christophe Fraser & James C. Cajka & Philip C. Cooley & Donald S. Burke, 2006. "Strategies for mitigating an influenza pandemic," Nature, Nature, vol. 442(7101), pages 448-452, July.
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    1. Matteo Manfredini & Marco Breschi, 2013. "Living Arrangements and the Elderly: An Analysis of Old-Age Mortality by Household Structure in Casalguidi, 1819–1859," Demography, Springer;Population Association of America (PAA), vol. 50(5), pages 1593-1613, October.

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