Antibody Responses after Classroom Exposure to Teacher with Coronavirus Disease, March 2020

Abstract

After returning from Europe to the United States, on March 1, 2020, a symptomatic teacher received positive test results for severe acute respiratory syndrome coronavirus 2. Of the 21 students exposed to the teacher in the classroom, serologic results suggested past infection for 2. Classroom contact may result in virus transmission.

Simulation-Based Estimation of SARS-CoV-2 Infections Associated With School Closures and Community-Based Nonpharmaceutical Interventions in Ontario, Canada

“…Our simulations showing that most infections in schools were associated with community acquisition rather than transmission within schools are congruent with numerous contact tracing studies of secondary infections in schools conducted in many jurisdictions, which show very infrequent onward transmission within schools. 30 , 31 , 32 , 33 , 34 , 35 , 36 For example, in a systematic review, Public Health Ontario 37 synthesized 4 studies of outbreak investigations that showed that 28 index cases among students and teachers lead to 2092 close contacts from which there were only 2 transmissions. Forbes et al, 38 in an analysis of health services data in the United Kingdom involving more than 9 million adults younger than 65 years, reported that living with a child aged 11 years or younger was not associated with increased SARS-CoV-2 infections or with COVID-19 ward or intensive care unit admissions.…”

COVID-19 ve okulların açılması: Bilimsel kanıtlar eşliğinde görüşler

“…In schools, there may be transmission to students from teachers or school staff. In addition, possible cases of transmission have been reported among students in schools ( 32 , 33 ).…”

“…Transmission in educational settings: Limited evidence suggests that COVID-19 transmission from pre-adolescent symptomatic children is rare in educational settings, especially if there are few students in the classroom ( 7 – 9 ). Also, transmission by pre-symptomatic children and adolescents to others in educational settings was rare where effective control measures were employed ( 33 , 34 ). During the first wave of the pandemic, in early 2020 in Australia, most schools remained open.…”

The potential impact of School Closure Relative to Community-based Non-pharmaceutical Interventions on COVID-19 Cases in Ontario, Canada

“…Our results, showing that the majority of infections in schools are due to community acquisition rather than transmission within schools, are congruent with numerous contact tracing studies of secondary infections in schools conducted in many jurisdictions which show very infrequent onward transmission within schools. [17][18][19][20][21][22][23] For example, in a systematic review, Public Health Ontario 24 synthesized four studies of outbreak investigations which showed that 28 index cases among students and teachers lead to 2,092 close contacts from which there were only two transmissions. Forbes et al 25 in an analysis of health services data in the United Kingdom, involving more than nine million adults less than 65 years old,…”