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Low SARS-CoV-2 Transmission in Elementary Schools — Salt Lake County, Utah, December 3, 2020–January 31, 2021
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March 26 2021
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Source: MMWR Morbidity Mortal Weekly Rep. 70(12):442-448
[PDF-120.04 KB]
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Journal Article:Morbidity and Mortality Weekly Report (MMWR)
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Description:School closures affected more than 55 million students across the United States when implemented as a strategy to prevent the Transmission of SARS-CoV-2, the Virus that causes COVID-19 (1). Reopening schools requires balancing the risks for SARS-CoV-2 infection to students and staff members against the benefits of in-person learning (2). During December 3, 2020-January 31, 2021, CDC investigated SARS-CoV-2 Transmission in 20 elementary schools (kindergarten through grade 6) that had reopened in Salt Lake County, Utah. The 7-day cumulative number of new COVID-19 cases in Salt Lake County during this time ranged from 290 to 670 cases per 100,000 persons.| Susceptible| school contacts| (students and staff members exposed to SARS-CoV-2 in school) of 51 index patients** (40 students and 11 staff members) were offered SARS-CoV-2 reverse transcription-polymerase chain reaction (RT-PCR) tTesting. Among 1,041 susceptible school contacts, 735 (70.6%) were tested, and five of 12 cases identified were classified as school-associated; the secondary attack rate among tested susceptible school contacts was 0.7%. Mask use among students was high (86%), and the median distance between students' seats in classrooms was 3 ft. Despite high community incidence and an inability to maintain ≥6 ft of distance between students at all times, SARS-CoV-2 Transmission was low in these elementary schools. The results from this investigation add to the increasing evidence that in-person learning can be achieved with minimal SARS-CoV-2 Transmission risk when multiple measures to prevent Transmission are implemented (3,4).
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ISSN:0149-2195 (print);1545-861X (digital);
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Pubmed ID:33764967
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Pubmed Central ID:PMC7993560
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Pages in Document:7 pdf pages
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Volume:70
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Issue:12
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