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Continued proportional age shift of confirmed positive COVID-19 incidence over time to children and young adults: Washington State March—August 2020

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  • Judith Malmgren
  • Boya Guo
  • Henry G Kaplan

Abstract

Background: As the coronavirus (COVID-19) epidemic passed initial infection peak in Washington State, phased re-opening lifted stay-at-home orders and restrictions leading to increased non-essential work, social activities and gathering, especially among younger persons. Methods: A longitudinal cohort analysis of Washington State Department of Health COVID-19 confirmed case age distribution 1) March-April 2020 (N = 13,934) and 2) March-August 2020 (N = 76,032) for proportional change over time using chi square tests for significance. Results: From March 1st to April 19, 2020 COVID-19 age distribution shifted with a 10% decline in cases age 60 years and older and a 20% increase in age 0-19/20-39 years (chi-square = 223.10, p

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  • Judith Malmgren & Boya Guo & Henry G Kaplan, 2021. "Continued proportional age shift of confirmed positive COVID-19 incidence over time to children and young adults: Washington State March—August 2020," PLOS ONE, Public Library of Science, vol. 16(3), pages 1-12, March.
    • Handle: RePEc:plo:pone00:0243042
    DOI: 10.1371/journal.pone.0243042
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