Link to the CDC published study. This study was conducted in preparation for the development of guidelines by the World Health Organization on the use of nonpharmaceutical interventions for pandemic influenza in nonmedical settings.
This study was supported by the World Health Organization.
https://wwwnc.cdc.gov/eid/article/26/5/19-0994_article?fbclid=IwAR3ASxBUrRE5LHeZsZF-iHrpTuX2PprS8FnkKGUpEUDEIAnH6s5wQOpkOJI See Less
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