I know a person in Menlo Park that the whole family "had CODVID-19 symptoms" (Stanford doctor's word) and they were diagnosed with viral pneumonia but they were refused of being tested (after asking permission to the CDC) and sent home asked to be in "isolation and do not tell anybody because it may spread panic." The first person to get it in the family was one of the child in school that started have symptoms at the end of Jan.
I supposed that they were not the only ones.
Even nurses dealing with patients were refused to be tested according to this video: https://youtu.be/DiqVCQv__pE