https://www.nytimes.com/interactive/2020/04/21/world/coronav...
https://www.nytimes.com/interactive/2020/04/27/upshot/corona...
Giving that we're still low on tests, if someone dies before a test of COVID-like symptoms, it makes sense to consider them a probable (and save the test for someone alive) if deaths are 6x normal - you've got a roughly 5/6 chance of being correct.