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. 2021 May 28;70(21):785–791. doi: 10.15585/mmwr.mm7021e2

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The figure comprises three line charts showing COVID-19 incidence among children aged 5–10 years, 11–13 years, and 14–17 years, by week of report to the Utah Department of Health, during July 5, 2020-March 14, 2021. — COVID-19 incidence* among children aged 5–10 years (N = 311,812), 11–13 years (N = 161,991), and 14–17 years (N = 209,578), by week — Utah, July 5, 2020–March 14, 2021^†^,^§^,^¶^,**

Abbreviation: UDOH = Utah Department of Health.

* Total new cases per 100,000 persons in the previous 7 days, calculated using 2018 population data. https://ibis.health.utah.gov

^† In August 2020, Utah schools opened for in-person instruction in 40 of 41 school districts.

^§ On November 9, 2020, Utah State Public Health Order 2020-21 limited participation in organized extracurricular activities to high school football practice or games. https://coronavirus-download.utah.gov/Health/UPHO-2020-21-Temporary-Statewide-COVID-19-Restrictions.pdf, https://coronavirus-download.utah.gov/School/COVID-19_School_Manual_FINAL.pdf

^¶ Test to Play, which required testing every 14 days for participants in high school extracurricular activities, is described in the Utah COVID-19 School Manual (https://coronavirus-download.utah.gov/School/COVID-19_School_Manual_FINAL.pdf) and was mandated by Utah State Public Health Order 2020-25 (https://coronavirus-download.utah.gov/Health/UPHO_2020-25_Statewide_COVID-19_Restrictions.pdf), effective November 30, 2020.

** Beginning August 2020, schools were advised to transition to remote instruction for 14 days when the number of school-associated cases among students and staff members crossed a specified outbreak threshold. During August–December 2020, the outbreak threshold was 15 school-associated cases during the previous 14 days. Under Test to Stay (https://coronavirus-download.utah.gov/School/COVID-19_School_Manual_FINAL.pdf), which began January 4, 2021, the outbreak threshold of cases during the previous 14 days changed to 1% of the school population for schools with >1,500 students and staff members and 15 cases for schools with ≤1,500 students and staff members, and the period of advised remote instruction after crossing the outbreak threshold changed to 10 days.