“We should have told people to wear cloth masks right off the bat,” said epidemiologist. A Tragic Learning Curve

The original CDC guidance partly was based on what was thought to be low disease prevalence earlier in the pandemic. Also they had legitimate concern that the limited supply of surgical masks and N95 respirators should be saved for health care workers. (But)  “We should have told people to wear cloth masks right off the bat,” said UC San Francisco epidemiologist George Rutherford, MD. He also said "Another factor “is that culturally, the U.S. wasn’t really prepared to wear masks.”  What may have finally convinced the CDC to change its guidance in favor of masks were rising disease prevalence and a clearer understanding that both pre-symptomatic and asymptomatic transmission are possible – even common. 

BE SAFE, BE AWARE, BE VIGILANT, WEAR A MASK! ©

https://www.ucsf.edu/news/2020/06/417906/still-confused-about-masks-heres-science-behind-how-face-masks-prevent

 


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