
Johns Hopkins Bloomberg School of Public Health
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https://publichealth.jhu.edu 26-02-2009 15:22:11
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Washing cloth masks in the washer and dryer is best, says JohnsHopkinsEHE's Kirsten Koehler, but you can also "put the mask in something like a paper bag that is breathable and leaving that somewhere ... warm for at least two days before you use it again" abc6onyourside.com/news/local/how…