As the World Health Organization has held since August, no one under the age of 5 should be required to wear a mask. WHO and UNICEF advise that children aged 12 and over should wear a mask (under the same conditions as adults). The science suggests that young children do not transmit Covid-19 (even new variants of it) in a significant way. The science concerning the low risk of COVID-19 among young children has long been clear: A July 29, 2020 article in the New England Journal of Medicine titled “Reopening Primary Schools during the Pandemic” states, “Given the same exposure to infected household members, children under the age of 10 seem to become infected less frequently than adults and older adolescents; studies of both household and community transmission find that children 9 or younger are also less susceptible than 10-to-14-year-olds.” Data also suggest that infected children under 10 years of age are less contagious than infected adults, and transmit the disease much less often than adults do (as found in a large South Korean study in summer 2020).