Ventilation
Vaccination
Wearing masks
Staying home when sick

These things would GREATLY reduce ALL of these—measles, RSV, influenza, covid. We would be a much more functioning society.
https://www.cbc.ca/news/canada/manitoba/manitoba-respiratory-virus-measles-rates-roussin-9.7086440

@forestine I suggest going into a dark room and touching a metal part of a lamp. will it solve your problem? no, but it's fun to see the light bulb power up for a split second.

@jepyang it is so fucking wild how much of a difference that makes.