Duke University study which was published in September 2020, says that correctly fitted N95 masks that cover the full face are the most effective at preventing particle transfer.
With NZ government now advising that cloth masks are NOT suitable and everyone should wear approved / verified KN95 or N95 masks, these types of masks are being snapped up quickly and they are not so easy to source at this time.
My understanding was the Duke study related to evaluating a simple / cost effective mask testing method rather than specifically the effectiveness of the masks used? While the data on "mask effectiveness" produced during the research is interesting and a possible insight into mask effectiveness, as it wasn't the focus of the study it should be taken with a grain of salt.Duke University study which was published in September 2020, says that correctly fitted N95 masks that cover the full face are the most effective at preventing particle transfer.
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