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10.1371/journal.pone.0251242

http://scihub22266oqcxt.onion/10.1371/journal.pone.0251242
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34014947!8136712!34014947
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suck abstract from ncbi


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pmid34014947      PLoS+One 2021 ; 16 (5): e0251242
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  • An examination of school reopening strategies during the SARS-CoV-2 pandemic #MMPMID34014947
  • Landeros A; Ji X; Lange K; Stutz TC; Xu J; Sehl ME; Sinsheimer JS
  • PLoS One 2021[]; 16 (5): e0251242 PMID34014947show ga
  • The SARS-CoV-2 pandemic led to closure of nearly all K-12 schools in the United States of America in March 2020. Although reopening K-12 schools for in-person schooling is desirable for many reasons, officials understand that risk reduction strategies and detection of cases are imperative in creating a safe return to school. Furthermore, consequences of reclosing recently opened schools are substantial and impact teachers, parents, and ultimately educational experiences in children. To address competing interests in meeting educational needs with public safety, we compare the impact of physical separation through school cohorts on SARS-CoV-2 infections against policies acting at the level of individual contacts within classrooms. Using an age-stratified Susceptible-Exposed-Infected-Removed model, we explore influences of reduced class density, transmission mitigation, and viral detection on cumulative prevalence. We consider several scenarios over a 6-month period including (1) multiple rotating cohorts in which students cycle through in-person instruction on a weekly basis, (2) parallel cohorts with in-person and remote learning tracks, (3) the impact of a hypothetical testing program with ideal and imperfect detection, and (4) varying levels of aggregate transmission reduction. Our mathematical model predicts that reducing the number of contacts through cohorts produces a larger effect than diminishing transmission rates per contact. Specifically, the latter approach requires dramatic reduction in transmission rates in order to achieve a comparable effect in minimizing infections over time. Further, our model indicates that surveillance programs using less sensitive tests may be adequate in monitoring infections within a school community by both keeping infections low and allowing for a longer period of instruction. Lastly, we underscore the importance of factoring infection prevalence in deciding when a local outbreak of infection is serious enough to require reverting to remote learning.
  • |*Pandemics[MESH]
  • |*Schools[MESH]
  • |Adolescent[MESH]
  • |COVID-19/*transmission[MESH]
  • |Child[MESH]
  • |Contact Tracing/*methods[MESH]
  • |Humans[MESH]
  • |Models, Theoretical[MESH]
  • |Population Surveillance/*methods[MESH]


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