Coronavirus: How Silicon Valley cases spread may surprise you: County reveals new case investigation data

[http://dummy.us.eu.org/robert (Robert)]

https://www.mercurynews.com/2020/10/25/coronavirus-how-silicon-valley-cases-spread-may-surprise-you/

"people have this perception that the risk from people that they know well
 and feel comfortable with like family members, relatives, friends, is much
 lower than that from strangers"

I wonder if concepts like disease transmission can be taught in elementary
school?

Anyway, the core problem seems to be the lack of access to single
occupancy vehicles and small households.  Which, by definition,
disadvantages people living in urban areas.