Nice Post on a timely topic. Going back to what you were telling your family, the infectious features of the virus have to be taken in consideration as you said. However, it is not the only reason that causes the virus to spread. Another main reason is that despite telling people over and over again about the importance of basic hygiene rules to prevent contagion, some think that they are "immune" to it and therefore stop washing frequently their hands or stop wearing masks. As all pandemic before this one, we are facing an invisible threat. The famous say "I believe only what I see" is a big threat by itself as it leads people to adopt the wrong behavior. And this goes along with increasing "anti-science" movements...