Why Masks?

Resources for Vaccine and Mask safety and Effectiveness

Claim: Masks are harmful and make you sick/masks limit oxygen to the brain/masks are not safe

  • For the vast majority of the general public, masks present no health risks.  
  • The prolonged use of masks may be uncomfortable, but it does not lead to CO2 intoxication or oxygen deficiency.

Claim: Masks are not effective

  • Numerous studies have shown that masks are an effective tool in preventing the spread of COVID-19 (https://www.cdc.gov/coronavirus/2019-ncov/science/science-briefs/masking-science-sars-cov2.html

  • When a person who is infected with the virus that causes COVID-19 (even if they don’t have symptoms) wears a cloth face covering, it can prevent the spread of infection to others by blocking droplets from spreading when the person coughs, sneezes or speaks.

  • People can pass the virus to others before they have symptoms of COVID-19 or be infected but never show symptoms, which is why it’s important to wear a mask. 


Masks – Safety and Effectiveness (to address school-based transmission)

  1. Science Brief: Community Use of Cloth Masks to Control the Spread of SARS-CoV-2.https://www.cdc.gov/coronavirus/2019-ncov/science/science-briefs/masking-science-sars-cov2.html

  2. American Academy of Pediatrics. Face Masks.https://www.aap.org/en/pages/2019-novel-coronavirus-covid-19-infections/clinical-guidance/cloth-face-coverings/

  3. Assessment of Respiratory Function in Infants and Young Children Wearing Face Masks During the COVID-19 Pandemic. https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2776928

  4. Children's emotion inferences from masked faces: Implications for social interactions during COVID-19. https://pubmed.ncbi.nlm.nih.gov/33362251/

  5. The Impact of Face Masks on the Emotional Reading Abilities of Children—A Lesson From a Joint School–University Project. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8383324/pdf/10.1177_20416695211038265.pdf

  6. The impact of face masks on children-A mini review. https://pubmed.ncbi.nlm.nih.gov/33533522/.

  7. Mask Use and Ventilation Improvements to Reduce COVID-19 Incidence in Elementary Schools — Georgia, November 16–December 11, 2020. https://www.cdc.gov/mmwr/volumes/70/wr/mm7021e1.htm?s_cid=mm7021e1_w.

  8. Low SARS-CoV-2 Transmission in Elementary Schools — Salt Lake County, Utah, December 3, 2020–January 31, 2021. https://www.cdc.gov/mmwr/volumes/70/wr/mm7012e3.htm.

  9. ABC Collaborative. https://abcsciencecollaborative.org/report-shows-that-n-c-k-12-schools-reopened-safely-paving-the-way-for-schools-nationwide-to-limit-covid-19-spread-in-the-classroom/

  10. ABC Collaborative. https://today.duke.edu/2021/06/research-finds-masks-can-prevent-covid-19-transmission-schools

  11. Effectiveness of 3 Versus 6 ft of Physical Distancing for Controlling Spread of Coronavirus Disease 2019 Among Primary and Secondary Students and Staff: A Retrospective, Statewide Cohort Study. https://academic.oup.com/cid/advance-article/doi/10.1093/cid/ciab230/6167856

  12. Adherence to Masking Requirement During the COVID-19 Pandemic by Early Elementary School Children. https://onlinelibrary.wiley.com/doi/10.1111/josh.13033

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