High levels of covid and RSV in the US are leading to health authorites saying wearing masks is needed to prevent it from spreading. Los Angles is likely to introduce a mask requirement for indoors by the end of December 2022. Carrying hand sanitizer and keeping wipes with you is a good idea because RSV spreads through touching infected surfaces. Vaccination for flu and covid is also a key prevention action. As most people are no longer wearing masks in the US the practice of wearing masks is becoming a good idea once again.