Abstract
AbstractMask usage was mandated by public health authorities globally to decrease the spread of COVID-19. These recommendations were based on data showing that N95 masks and possibly surgical masks, when worn tight against the face, help slow the transmission of the SARS-CoV-2 virus. However, cloth and loose-fitting surgical masks are greatly inferior.MethodsMask use by a random observation of 100 people in public indoor facilities was recorded and statistically analyzed.ResultsOut of 100 people wearing a mask, 37 wore a cloth mask. Another 36 people wore a loosely applied surgical mask. Only 27 people wore a surgical mask that covered the nose and mouth and was applied firmly against the face at its margins. There were no people seen wearing an N95 mask. Overall, people were about 70% more likely to wear a surgical mask than a cloth mask (63 vs 37, p < 0.05). Of those wearing a surgical mask, more people wore it loosely than properly (36 to 27, p=0.17). Overall, people were more likely to wear a cloth mask or improperly applied surgical mask than a properly fitted one (73 vs 27, p < 0.001).ConclusionIn public settings, using cloth or loose-fitting surgical masks was almost 3 times more common than adequately using a tight-fitting surgical mask. Out of the 100 people observed, none wore an N95 respirator mask.
Publisher
Cold Spring Harbor Laboratory
Reference14 articles.
1. Howard J , Ludwig P , Woodson C , #Masks4All. What Countries Require or Recommend Masks In Public or Recommend Masks? [Internet]. 2020 [cited 2023 Jun 18]. Available from: https://masks4all.co/what-countries-require-masks-in-public/
2. Masks are now required indoors at San Diego Unified School District schools, offices - ABC News [Internet]. [cited 2022 Sep 6]. Available from: https://abcnews.go.com/Health/masks-now-required-indoors-san-diego-unified-school/story?id=87008125
3. Oregon Mask Requirements [Internet]. [cited 2022 Sep 6]. Available from: https://govstatus.egov.com/or-oha-face-coverings
4. Effectiveness of Face Mask or Respirator Use in Indoor Public Settings for Prevention of SARS-CoV-2 Infection - California, February-December 2021;MMWR Morb Mortal Wkly Rep,2022
5. Lindsley WG , Blachere FM , Law BF , Beezhold DH , Noti JD . Efficacy of face masks, neck gaiters and face shields for reducing the expulsion of simulated cough-generated aerosols. Aerosol Science and Technology. 2020 Dec 11;1–12.