Children’s face masks increase carbon dioxide 6-fold over acceptable levels

Children's face masks increase carbon dioxide 6-fold over acceptable levels

Note that views expressed in this opinion article are the writer’s personal views and not necessarily those of TrialSite.

Dr. Ron Brown

July 1, 2021

JAMA Pediatrics recently published findings from a randomized controlled trial in Germany that assessed carbon dioxide content in air inhaled by healthy children wearing face masks. Experimental Assessment of Carbon Dioxide Content in Inhaled Air With or Without Face Masks in Healthy Children: A Randomized Clinical Trial | JAMA Pediatrics | JAMA Network. Normal levels of carbon dioxide in open air are approximately 400 particles per million (ppm). The German Federal Environmental Office permits up to five times normal levels of carbon dioxide concentration (2000 ppm) in closed rooms, with higher levels considered unacceptable. 

Results of the German randomized controlled trial found that mean carbon dioxide levels inhaled by children wearing face masks were 6-fold higher than acceptable levels set by the German government, with mean concentrations approaching 14 000 ppm.. One seven-year old child’s carbon dioxide level was 25 000 ppm. Furthermore, measured levels in children were reached after only three minutes of ma...

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