Once that was cleared up the labs sent all the piled up results at one time. That is what created all the simultaneous spikes.
Each state also had a RECORD NUMBER of NEGATIVE and TOTAL tests on those dates.
The only stat that matters is the infection rate. If it is not rising or is declining then the spikes are an anomaly.
Here in my county we had large spikes a few days ago. Our Mayor and council panicked and proposed a mask ordinance.
Monday when the proposed it saw the lowest number of positives since April, yesterday when they THANKFULLY voted it down and instead went with a RESOLUTION asking businesses to require masks we had the lowest number of positives since late March.