Purell Frank wrote:
There was also a test in Boston at a homeless shelter.
146 of 397 tested positive. That is over 30%. I don't how well the test works.
"The number of positives was shocking, but the fact that 100 percent of the positives had no symptoms was equally shocking,” said Dr. Jim O’Connell
https://www.boston25news.com/news/cdc-reviewing-stunning-universal-testing-results-boston-homeless-shelter/Z253TFBO6RG4HCUAARBO4YWO64/
Viruses tend to cluster. They are passed people to people If you're a doing a random sampling to determine overall infection state, you should spread out your tests over a larger area.