Although global vaccination efforts against SARS-CoV-2 are underway, the public is urged to continue using face masks as a primary intervention to control transmission. Recently, US public health officials have also encouraged doubling masks as a strategy to counter elevated transmission associated with infectious SARS-CoV-2 variants. US Centers for Disease Control and Prevention investigators reported that doubling masks increased effectiveness, but their assessment was limited in type and combinations of masks tested, as well as by the use of head forms rather than humans. Check out the full study below:

Fitted Filtration Efficiency of Double Masking During the COVID-19 Pandemic

It’s important to know that there was some variation, but overall the results support the conclusion that double masking provides more protection than a single mask.

Stay well, stay tuned, and double up those masks for bonus protection!