Holland Hospital issued the following announcement on July 25.
When it comes to homemade face masks, two or three layers of fabric is best. And be sure to remember this: your cloth masks need regular washing in hot water.
Several kinds of material have been suggested for making masks, but there's little or no evidence of how effective they are, the team noted.
For the study, the researchers compared single- and double-layer cotton face masks (with a thread count of 170 per inch) with a 3-ply surgical face mask.
The single-layer mask was made from a folded cotton T-shirt and the double-layer mask was made using the sewing method recommended by the U.S. Centers for Disease Control and Prevention.
The findings were published online July 23 in the journal Thorax.
Read about what researchers are saying about cloth masks.
Original source can be found here.
Source: Holland Hospital
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