San Diego County health officials have reported an additional 620 COVID-19 cases and three more deaths, increasing the total caseload since the start of the pandemic to 62,334, with the death toll rising to 918.
On Tuesday, a record 661 COVID-19 cases were reported in the county — surpassing the 652 cases reported Aug. 7.
"We have not seen cases this high in months and it's a clear indication that COVID-19 is widespread," said Dr. Wilma Wooten, the county's public health officer.
"These totals also show people are not following the public health recommendations that we know work to prevent getting and passing COVID-19."
Wooten added that in the weeks following Halloween, this record case jump is a warning sign people "need to follow public health guidance throughout the upcoming holiday season."
This comes as state data has landed the county in the most restrictive tier of the state's COVID-19 reopening plan. The restrictions associated with the purple tier will go into place just after midnight tonight, Wooten said.
Many nonessential businesses will be required to move to outdoor-only operations. These include restaurants, family entertainment centers, wineries, places of worship, movie theaters, museums, gyms, zoos, aquariums and cardrooms.
RELATED: Unwelcome Milestone: California Surpasses 1 Million COVID-19 Cases
The restrictions includes closing amusement parks. Bars, breweries and distilleries will be able to remain open as long as they are able to operate outside and with food on the same ticket as alcohol.
Retail businesses and shopping centers will be able to remain open with 25% of the building's capacity. No food courts will be permitted.
Schools will be able to remain open for in-person learning if they are already in session. If a district has not reopened for in-person learning, it must remain remote only. Offices are restricted to remote work.
Remaining open are essential services, personal care services, barbershops, hair salons, outdoor playgrounds and recreational facilities.
San Diego County is among 11 California counties preparing to move to more restrictive tiers, Supervisor Nathan Fletcher said Tuesday. He said it was likely cases would continue to increase for weeks, even after the purple tier restrictions.
"Slowing the spread of COVID is like turning an aircraft carrier, it's not a jet ski," he said.
The county's demotion from the less-restrictive red tier is the result of two weeks of case rates that exceeded the threshold of 7 per 100,000 residents.
In recent weeks, the region had an unadjusted rate well above the purple tier guidelines, but a significant effort to increase the volume of tests had allowed for an adjustment to bring it back to the red, or substantial, tier.
RELATED: San Diego Has Sunk Back To Purple Tier. What Does That Mean?
State officials reported Tuesday that San Diego County had an unadjusted new daily coronavirus case rate of 10.0 per 100,000. The adjusted case rate dropped to 8.9 per 100,000. Last week's unadjusted case rate was 8.7 per 100,000.
According to the reopening plan, a county has to report data exceeding a more restrictive tier's guidelines for two consecutive weeks before being moved to that tier. A county then has to be in that tier for a minimum of three weeks before it may move to a less restrictive tier.
Even as the number of cases continues to climb, the testing positivity rate for the region continues to decline. From last week's data, it dropped to 2.6%, a 0.8% decline. It still remains high enough for this metric to remain in the orange tier.
The state's health equity metric, which looks at the testing positivity for areas with the least healthy conditions, increased from 5.3% to 6.5% and remained in the red tier. This metric does not move counties backward to more restrictive tiers, but is required to advance.
No new data was reported Wednesday because of Veterans Day.
Of the total number of cases in the county, 4,130 — or 6.6% — have required hospitalization and 948 patients — or 1.5% of all cases — had to be admitted to an intensive care unit.
The county launched a COVID-19 case rate map Thursday showing how cities and communities are being impacted by the novel coronavirus. The interactive map allows users to identify the case rate per 100,000 residents in cities and communities or by ZIP codes.
The map also shows where each area falls under the different state tiers and whether their case rate and testing positivity are going up or down. The map can be found online.