Journal
CELL REPORTS MEDICINE
Volume 2, Issue 11, Pages -Publisher
CELL PRESS
DOI: 10.1016/j.xcrm.2021.100452
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The study found that in 2020-2021, transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in K-12 schools was rare, with saliva-based screening helping to reduce the risk of in-school transmission. However, the costs of screening were high and implementation required a significant amount of manpower.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission in K-12 schools was rare during in 2020-2021; few studies included Centers for Disease Control and Prevention (CDC)-recommended screening of asymptomatic individuals. We conduct a prospective observational study of SARS-CoV-2 screening in a mid-sized suburban public school district to evaluate the incidence of asymptomatic corona virus disease 2019 (COVID-19), document frequency of in-school transmission, and characterize barriers and facilitators to asymptomatic screening in schools. Staff and students undergo weekly pooled testing using home-collected saliva samples. Identification of >1 case in a school prompts investigation for in-school transmission and enhancement of safety strategies. With layered mitigation measures, in-school transmission even before student or staff vaccination is rare. Screening identifies a single cluster with in-school staff-to-staff transmission, informing decisions about in-person learning. The proportion of survey respondents self-reporting comfort with in-person learning before versus after implementation of screening increases. Costs exceed $260,000 for assays alone; staff and volunteers spend 135-145 h per week implementing screening.
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