Dear Bishop Hendricken Family,
Recently, researchers at Duke University published their findings on the efficacy of several types of face masks and coverings at filtering expelled respiratory droplets during speech. The goal of the study was to determine which masks were most effective at cutting down the transmission of potentially infectious COVID droplets, and more importantly, which were least effective. The full study can be found from Science Advances, here, and is written about in USA Today, here.
Based on the study’s findings, we have updated our guidance on masks and face coverings, effective immediately for all Bishop Hendricken community members when on campus. This includes orientations, school days, visits by appointment, and more. This protocol has been updated in our Reopening Bishop Hendricken plan on pg. 15, here.
The Highlights
- Masks and face coverings must be made of tightly woven fabric, such as cotton or polypropylene.
- Masks and face coverings must have 2 or more layers of fabric.
- A snug fit is most important for all masks and face coverings.
What Masks/Face Coverings Can I Use?
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3-layer surgical mask
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Polyblend masks (3 layers of cotton-polypropylene-cotton)
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Polypropylene apron masks (2 layers of synthetic fabric)
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2-layer cotton masks (pleated or not, snugly fit)
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Olson style masks (curved to snugly fit the mouth and nose with 2 layers of fabric)
What Masks/Face Coverings Can’t I Use?
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No fitted N95’s – These should be reserved for medical professionals only, especially in case of a PPE shortage.
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No bandanas
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No gaiters or neck fleeces
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No valved N95’s
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No knitted masks
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No 1-layer masks of any kind
Overall, we’re asking our students, faculty, staff, and parents to be smart about their mask or face covering selection. For masks/face coverings that we’ve included as acceptable for use on campus, the study emphasizes the importance of proper fit above all else. Ensure that the mask fits snugly on your face, covers your mouth and nose completely, and is secured under your chin.
If you have any questions regarding masks protocol, please feel free to contact Mrs. Jennifer Monit, RN, School Nurse, at jmonti@hendricken.com.
