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Public health
Original research
Ability of fabric face mask materials to filter ultrafine particles at coughing velocity

 

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Dec 2020441643381490
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Feb 2021378437141188
Mar 202129712876555
Apr 202124902428465
May 2021832781306
Jun 2021453426208
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Aug 2021907889404
Sep 2021651612261
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Nov 2021339265139
Dec 2021522499226
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Aug 202219919662
Sep 202220317870
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Feb 202316716030
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Apr 202311210131
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Aug 202314914223
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Jun 202412811832
Jul 202414814529
Aug 202412911821
Sep 202421212
Total442674292113559