Experience with open schools and preschools in periods of high community transmission of COVID-19 in Norway during the academic year of 2020/2021.

BMC Public Health · 2022 · PMC9338507 · PMID 35907850

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an increasing trendno p-value reported

In general, a declining trend in the number of outbreaks was observed during holiday weeks, followed by an increasing trend shortly after.

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