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Tag: schools
February 9, 2021
Risk of Hospitalisation with COVID-19 among Teachers Compared to Healthcare Workers and Other Working-Age Adults
[Pre-print, not peer-reviewed] Teachers were at 1.4-times the risk for developing SARS-CoV-2 infection compared to the general population of working-age adults, according to a population-based case-control study including all cases of adult COVID-19 in Scotland (n=83,817) during March 2020 to January 2021 and a random sample of matched controls (n=841,708). However, teachers and their household…
February 8, 2021
COVID-19 Transmission in Educational Institutions August to December 2020 Rhineland-Palatinate Germany a Study of Index Cases and Close Contact Cohorts
[Pre-print, not peer-reviewed] A study of SARS-CoV-2 transmission in schools and daycare centers in Germany from August-December 2020 showed that the risk of infection among contacts of a confirmed COVID-19 case was low but varied depending on type of educational institution and whether the case was a teacher or student/child. Out of 784 index cases,…
February 2, 2021
Coronavirus Disease 2019 (COVID-19) Infection Rates in a Private School in Brooklyn, New York
COVID-19 cases were rare (0.13%) in a private school that reopened for in-person learning from October to December 2020, despite the school being in a red zone (the highest level of COVID-19 restrictions) in Brooklyn, New York. The school employed mandatory in-school SARS-CoV-2 testing using rt-PCR-confirmed nasopharyngeal swabs with a 48-72 hour turnaround time. A…
January 29, 2021
Estimating Aerosol Transmission Risk of SARS-CoV-2 in New York City Public Schools During Reopening
Using previously collected indoor air quality data from New York City public schools, Pavilonis et al. estimated the probability of in-classroom transmission to be 5% for student-to-student transmission, 14% for student-to-teacher transmission, and 20% for teacher-to-student transmission after the introduction of one infectious person into the classroom. Consistent mask wearing by both students and teachers…
January 26, 2021
SARS-CoV-2 Transmission Associated with High School Wrestling Tournaments — Florida, December 2020–January 2021
An outbreak arising from a Florida high school wrestling tournament in December 2020 had an attack rate of at least 30% (38 of 126 tournament attendees who were tested) and a secondary attack rate of at least 9% (41 of 441 close contacts of the 38 COVID-19 patients). Among contacts, household members had the highest…
COVID-19 Cases and Transmission in 17 K–12 Schools — Wood County, Wisconsin, August 31–November 29, 2020
Despite widespread community transmission, limited COVID-19 spread was observed from August to November 2020 in 17 rural K-12 schools in Wood County, Wisconsin that reopened with in-person instruction and several infection mitigation measures. Schools implemented physical distancing among students and staff, established groups of 11-20 students, and had a 92% reported mask adherence among students….
January 19, 2021
Evaluation of SARS-CoV-2 Transmission Mitigation Strategies on a University Campus Using an Agent-Based Network Model
A SARS-CoV-2 transmission model parametrized to the University of California San Diego showed that reducing on-campus housing occupancy to single residents and implementing a hybrid instruction format (only 12% of sections in-person) with a class size cap of 50 could substantially reduce the basic reproduction number, R0. However, the addition of masking and physical distancing…
Reopening Schools and the Dynamics of SARS-CoV-2 Infections in Israel: A Nationwide Study
Nationwide weekly incidence of SARS-CoV-2 infections in Israel gradually increased after school reopening in May 2020, and positivity rates 21-27 days following school reopening increased at least 3-fold among adults ≥20 years, but did not increase for children <20 years old. No increase was observed in COVID-19 associated hospitalizations and deaths following school reopening. However,…
January 14, 2021
What Is the Evidence for Transmission of COVID-19 by Children in Schools? A Living Systematic Review
A systematic review and meta-analysis of 11 studies from Europe, Asia, Australia, and South America indicate that the overall SARS-CoV-2 attack rate and positivity rate in school environments are low. Data from 5 cohort studies (n=3,345 contacts and 8 transmissions) found a pooled attack rate of 0.15% for students and 0.7% for staff. Across 6…
January 11, 2021
Incidence and Secondary Transmission of SARS-CoV-2 Infections in Schools
Very limited within-school transmission of SARS-CoV-2 was found in the first 9 weeks of in-person instruction in North Carolina secondary schools between August and October 2020. There were 773 community-acquired infections documented by molecular testing in the 11 school districts with over 90,000 students and staff. Through contact tracing, health department staff identified an additional…
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