> If the vaccines work, then why be asked to wear a mask again if nearly everyone's vaccinated? Very few nations (including the US) have vaccination rates that

> If the vaccines work, then why be asked to wear a mask again if nearly everyone's vaccinated? Very few nations (including the US) have vaccination rates that are high enough to generate herd immunity. Vaccines do prevent a vaccinated person from becoming seriously ill if they become infected. Vaccines don't do much to prevent a vaccinated person from becoming infected and, once infected, infecting others. Masks do help to prevent an infected wearer from infecting others. Surgical masks have low effectiveness at preventing the wearer from becoming infected. That's why its important that enough people wear masks: we each protect each-other. Individualistic societies seem to be having a particular problem with these concepts.