US numbers via @COVID19Tracking. Weird but better day.

Newly-reported deaths
Today: 2,108
Yesterday: 2,674
One week ago (4/15): 2,492

Newly-reported cases
T: 27K
Y: 27K
4/15: 30K

Newly-reported tests
T: 311K
Y: 152K
4/15: 161K

Share of positive tests
T: 9%
Y: 18%
4/15: 19%
First, on the deaths: good that the numbers are down not only from the awful ones yesterday, but also relative to a week ago. Leaves hope that some of the #& #39;s yesterday were states catching up on deaths that had been missed before. Still: over 2K per day so not much to celebrate.
On the cases and tests: California reported a huge backlog of negative tests today, which is why there was the sharp one-day increase. It probably does not represent a new normal of higher testing volumes, unfortunately.
MANY states, California being the perhaps the worst offender, report positive tests diligently but negative tests erratically. So when you see a state report 150K "new" negative tests, it doesn& #39;t mean the tests were all conducted yesterday.
Instead, for states like these, it means "we& #39;ve had 150K more negative tests results since we last could be bothered to give you a good estimate of negatives". Odds are that many those negatives actually occurred days ago or even weeks ago.
Importantly, the negatives do not necessarily line up with the positives. If I take a test Tuesday, and it& #39;s positive, it might show up in the data Wednesday in California. If it& #39;s negative then, who knows—it might show up next week.
In states that *are* diligent about reporting negatives, like New York, you *can* literally say "here& #39;s what share of tests were positive yesterday". That doesn& #39;t work in states like California where negatives and positives are reported with different lags.
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