To expand on this, I looked at the data for confirmed cases and deaths (USA) and found inflection points for both curves. This should probably be taken with a grain of salt since different parts of the country are experiencing very different trend behaviors, and it's still not clear to me how much positive tests are an indicator of spread vs. testing capacity, but for what it's worth, the inflection point for the deaths curve is lagging the inflection point of the positive cases curve by ~30 days.