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COVID-19 for the ONU Community

A resource for finding and evaluating reliable information regarding COVID-19.

Frequent Questions

Carbon Dioxide

Intensive Care Unit physician Greg Schmidt, MD, from University of Iowa Health Care tests whether face masks impede your breathing or make you retain carbon dioxide.


  1. Face masks do not decrease your oxygen intake
  2. They also do not make you retain more carbon dioxide than usual
  3. Oxygen and CO2 are very small, so they can easily pass through a face mask
  4. Droplets are much larger in comparison, and they cannot pass easily through a face mask
  5. Wearing face coverings now helps us get back to normal sooner

Scholarly Articles

Children and Masks

There does not appear to be much scholarly research on children and masks. The following two articles were the most relevant items found during a recent, thorough search.

Mask Research 

Most research on masks and limiting the spread of viruses has focused on the mask protecting the person wearing it. COVID-19 has changed that focus. The articles below are listed in chronological order, dating back to 2008.