With dangerous air quality from the devastating Camp Fire near Chico forcing hundreds of schools to cancel class, hundreds of thousands of parents to scramble for child care, and our lungs to scramble ...
In previous letters1, 2 I suggested that proper use of an N100 respirator provides the best protection against SARS. The US Centers for Disease Control and Prevention (CDC) recently reported that the ...
In the past year, donning a mask has become second nature to all of us - slipping one on before leaving the house is now like slipping on a pair of shoes. New evidence has shown that various Covid-19 ...
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