SALT LAKE CITY — With every student in Utah receiving a KN95 face mask ahead of the 2021-2022 school year, many parents want to know: how often can my child reuse it? N95 respirators are tight-fitting face masks that filter out at least 95% of particles in the air and offer more protection than a medical mask because it filters out large …
Source: theguardian.com The World Health Organization has added another version of coronavirus to its list of “variants of interest” amid concerns that it may partially evade the immunity people have developed from past infection or vaccination. The Mu variant, also known as B.1.621, was added to the WHO’s watchlist on 30 August after it was detected in 39 countries and found to …
