If you look at the Santa Clara data they tested people who were recruited on Facebook. Hardly a random sample.
My comment was intended to be about the Pine Street Inn study:
"The CDC is now “actively looking into” into universal COVID-19 testing at Pine Street Inn homeless shelter. /
The broad-scale testing took place at the shelter in Boston’s South End a week and a half ago because of a small cluster of cases there. /
Of the 397 people tested, 146 people tested positive. Not a single one had any symptoms."