There's two components to tests: - random testing to discover new infections and to gauge how effective your measures are - targeted testing done as part of con

There's two components to tests: - random testing to discover new infections and to gauge how effective your measures are - targeted testing done as part of contact tracing - this is limited by how many people you have doing the legwork tracking down people and testing them - then quarantining anyone who's found to be positive Here in NZ we've reached the point where random tests are finding nothing, we're contact tracing at least 3-4 deep (a friend's family was tested who's spouse worked with someone who had a contact who had tested positive). At this point we're getting a couple of new cases per day for a couple of weeks, all from known sources already locked down - we started opening up (from a much deeper lock down than California) about 10 days ago, in 2 days we'll be opening restaurants, schools, most stores (but not bars for a week) crowds will be limited to ~10 for a while