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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Infect+Control
2020 ; 48
(8
): 880-882
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Decontamination of surgical face masks and N95 respirators by dry heat
pasteurization for one hour at 70°C
#MMPMID32479844
Xiang Y
; Song Q
; Gu W
Am J Infect Control
2020[Aug]; 48
(8
): 880-882
PMID32479844
show ga
BACKGROUND: The need for protective masks greatly exceeds their global supply
during the current COVID-19 pandemic. METHODS: We optimized the temperature used
in the dry heat pasteurization method to destroy pathogens and decontaminate
masks while retaining their filtering capacity. RESULTS: The current study showed
that dry heat at both 60°C and 70°C for 1 hour could successfully kill 6 species
of respiratory bacteria and one fungi species, and inactivate the H1N1 indicator
virus. After being heated at 70°C for 1, 2, and 3 hours, the N95 respirators and
surgical face masks showed no changes in their shape and components. The
filtering efficiency of bacterial aerosol for N95 respirators were 98%, 98%, and
97% after being heated for 1, 2, and 3 hour, respectively, all of which were over
the 95% efficiency required and similar to the value before being heated (99%).
The filtering efficiency for surgical face masks was 97%, 97%, and 96% for 1, 2,
and 3 hours of heating, respectively, all of which were also similar to the value
before being heated (97%). CONCLUSIONS: This method can be used at home and can
significantly resolve the current shortage of masks.