> A critical shortage of cloth? Not cloth, but melt-blown (and to some extent spun-bond) non-woven polypropylene. This is the fabric used to make surgical mask

> A critical shortage of cloth? Not cloth, but melt-blown (and to some extent spun-bond) non-woven polypropylene. This is the fabric used to make surgical masks, surgical gowns, bouffant caps, and disposable bedding for hospitals. All of these things were in shortage in March and April. The shortage of melt-blown non-woven fabric itself is now mostly over. Still in shortage are N95 respirators, which use melt-blown electret non-wovens — material given an electrostatic charge so that it attracts particles in the air. International N95-equivalent respirators are available to the public at inflated prices, but genuine (American standard) N95 masks are still difficult to find at any price. The WHO guidance against mask-wearing was a desperate attempt to mitigate N95 shortages. Even when all major health authorities were telling the public not to use masks of any kind, N95 respirators were widely purchased by people who had no idea how to use them. (I've been in NYC throughout the pandemic. It's extremely common to see N95's worn with facial hair, with un-pinched nose strips, or even with the lower head-strap dangling. N95's have little value if not properly sealed.) The WHO believed advising the public to wear any mask at all would exacerbate N95 hoarding and ultimately cost lives by making them unavailable to hospitals. [Edit:] Not sure why I'm getting downvotes for this. This isn't controversial information. Dr. Fauci has given this same explanation for why mask guidance changed: > [Fauci] also acknowledged that masks were initially not recommended to the general public so that first responders wouldn’t feel the strain of a shortage of PPE. > He explained that public health experts "were concerned the public health community, and many people were saying this, were concerned that it was at a time when personal protective equipment, including the N95 masks and the surgical masks, were in very short supply.” > [...] > “We wanted to make sure that the people, namely the health care workers, who were brave enough to put themselves in a harm way, to take care of people who you know were infected with the coronavirus and the danger of them getting infected,” Fauci concluded. See: https://thehill.com/changing-america/well-being/prevention-cures/502890-fauci-why-the-public-wasnt-told-to-wear-masks https://thehill.com/changing-america/well-being/prevention-c...