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Tag: schools
June 11, 2021
Seroprevalence of Anti-SARS-CoV-2 IgG Antibodies in the Staff of a Public School System in the Midwestern United States
A cross-sectional seroprevalence survey of teachers and staff (N=753) at a school in suburban Indiana conducted in July 2020 found that 1.7% of tested persons had antibodies to SARS-CoV-2. Persons with a previously confirmed SARS-CoV-2 infection had 48-fold higher odds of seropositivity compared to persons without previous infection, controlling for mask usage, travel history, symptom…
June 8, 2021
Passing the Test: A Model-Based Analysis of Safe School-Reopening Strategies
A SARS-CoV-2 transmission model simulating an average US elementary and high school classroom found that over an 8-week quarter, asymptomatic weekly screening combined with an A/B schedule generally had the greatest reduction in in-school transmission. Vaccination of staff greatly reduced transmission, but only among staff. Reductions in transmissions varied depending on local SARS-CoV-2 incidence and…
May 24, 2021
COVID-19 Mitigation Practices and COVID-19 Rates in Schools Report on Data from Florida New York and Massachusetts
[Pre-print, not peer-reviewed] A report of SARS-CoV-2 mitigation practices and infection rates in schools in Florida, New York, and Massachusetts during the 2020-2021 school year found higher infection rates among students attending schools with lower in-person density, but no association with rates among staff. The authors suggest these results could be attributed to a protective…
May 21, 2021
COVID-19 Testing to Sustain In-Person Instruction and Extracurricular Activities in High Schools — Utah, November 2020–March 2021
An evaluation of two high school COVID-19 testing programs implemented in Utah to support continuation of in-person instruction and extracurricular activities found that the programs saved an estimated 109,952 in-person instruction student-days and supported continuation of extracurricular activities. One program implemented SARS-CoV-2 testing every 14 days for participation in extracurricular activities, and the other implemented…
Mask Use and Ventilation Improvements to Reduce COVID-19 Incidence in Elementary Schools — Georgia, November 16–December 11, 2020
An analysis of COVID-19 incidence in K-5 public schools in Georgia (N=169 schools, 91,893 students) found that incidence was 37% lower in schools that required teachers and staff to wear masks and 39% lower in schools that improved ventilation. Incorporating ventilation strategies to dilute airborne particles (opening windows and doors and/or using fans) was associated…
May 20, 2021
Characteristics of COVID-19 Cases and Outbreaks at Child Care Facilities — District of Columbia, July–December 2020
24% of 469 licensed childcare facilities in Washington, DC reported at least one SARS-CoV-2 infection from July to December 2020, but facility-associated outbreaks (defined as two or more linked cases within a facility) only occurred in 6% of facilities. Among the 316 total cases, 56% were among teachers or staff and 49% occurred during outbreaks….
May 18, 2021
Adherence to Masking Requirement During the COVID-19 Pandemic by Early Elementary School Children
Observed mask adherence was on average 77% throughout a school day among pre-K to 2nd grade students participating in in-school instruction in an observational survey (n=1,000) across 15 private schools in Atlanta, GA during Fall 2020. Mask adherence, as observed by teachers for 1,048 classroom days, was lowest among Pre-K students (50-60%) and highest among…
May 10, 2021
School Reopenings, Mobility, and COVID-19 Spread: Evidence from Texas
[Working paper, not peer-reviewed] A modeling study from the National Bureau of Economic Research found that school reopenings in Texas in the fall of 2020 may have accelerated community spread of COVID-19, with 43,000 additional cases and more than 800 additional deaths within the first two months following reopenings. The report notes that schools in…
May 6, 2021
Implementation of SARS-CoV2 Screening in K-12 Schools Using In-School Pooled Molecular Testing and Deconvolution by Rapid Antigen Test
[Pre-print, not peer-reviewed] Large-scale implementation of pooled testing for routine screening of asymptomatic SARS-CoV-2 infection was demonstrated to be feasible across 592 schools in Massachusetts between January and April 2021. During the study period, 259,726 individuals were tested across 50,636 pools (mean swabs per pool = 7) with a median turnaround time of 21 hours….
April 30, 2021
Household COVID-19 Risk and in-Person Schooling
A large, national survey of US adults in all 50 states and Washington, DC (N=2,142,887) found an association between living with a child who attended in-person school and the risk of COVID-19-associated outcomes, including reporting COVID-like illness (OR=1.4) or testing positive for SARS-CoV-2 (OR=1.3), although this association did not persist when ≥7 in-school mitigation measures…
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