agent.disease-and-advisory

摘要

This report describes direct observation of mask use at six universities with mask mandates during September-November 2020.

詳細內容

This report describes direct observation of mask use at six universities with mask mandates during September-November 2020.

關鍵發現

(需要透過 WebFetch 補充或人工審核來提取關鍵發現)

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萃取時間: 2026-02-05T15:14:25Z 資料來源: CDC MMWR