Washington Post – “…as face coverings have become increasingly commonplace in American life, so have questions about efficacy — and now a group of researchers from Duke University are aiming to provide some answers. In a recently published study, the researchers unveiled a simple method to evaluate the effectiveness of various types of masks, analyzing more than a dozen different facial coverings ranging from hospital-grade N95 respirators to bandanas. Of the 14 masks and other coverings tested, the study found that some easily accessible cotton cloth masks are about as effective as standard surgical masks, while popular alternatives such as neck gaiters made of thin, stretchy material may be worse than not wearing a mask at all…”