Regular Monitoring May Be only Way to Prevent Large COVID-19 Outbreaks in Schools (IMAGE)
Caption
Depiction of classroom transmission. The classroom has five groups of students who are considered close contacts. The index case (dark red) attends a class in which all other students are susceptible. The index case may infect some other students directly (medium red), and they may go on to infect others (pale red). Transmission can occur within groups and between groups (at a lower rate).
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Paul Tupper (CC BY 4.0, <a href="https://creativecommons.org/licenses/by/4.0/" target="_blank">https://creativecommons.org/licenses/by/4.0/</a>)
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