Current data quality grade
To help the public understand how well each state is performing, we have assigned each state a data-quality grade based on our assessment of the completeness of their reporting. Learn more
New tests (Calculated)Total PCR tests (people)
New cases (Calculated)
New deaths (Calculated)
We calculate daily changes based on the data states report each day. Some states report new cases, tests, and deaths using other methods. Please consult official state data sources for more information. We chart “New tests” using different units across jurisdictions, because not all states and territories report tests in the same units. Learn more about total test units and see what we chart for each jurisdiction in our total tests documentation.
We do not have a complete dataset for every metric in every state. If we we have data for less than 30% of the past 90 days for a given metric, you’ll see a warning instead of a chart for that metric.
All the data for these charts is available for download. You can also review tabular national data on our US historical data page and data for each state and territory on the individual state or territory’s overview page.
Viral (PCR) testsArizona viral (PCR) testing Historical data
(in test encounters)
Antibody testsArizona antibody testing Historical data
HospitalizationArizona hospitalization Historical data
OutcomesArizona outcomes Historical data
Long-Term Care (LTC)Arizona long-term care data
from LTC facilities20.1%
Data as of November 19 2020
Arizona combines PCR and antigen tests in the total tests figure reported on the state’s dashboard
Arizona regularly reviews and removes duplicate records which may occasionally result in minor decreases of cumulative figures.
The Recovered data point we report for Arizona reflects the number of COVID-19 patients discharged from the hospital and therefore does not represent the total number of people who have recovered from COVID-19, since many people with COVID are never hospitalized.
Negative test results reported in our API and CSVs are calculated by subtracting Positive PCR tests (people) from Total PCR tests (specimens) in the absence of better data.
On October 6, 2020, The Arizona Department of Health Services announced that they were removing cases who had been admitted to a hospital but had not been hospitalized from their total hospitalization counts. This results in a decrease of Arizona's cumulative hospitalizations.
As of September 25, 2020, Arizona’s total test timeseries is stored in our Total PCR Tests (People) field instead of Total PCR Tests (specimens), reflecting a response to our outreach to Arizona’s health department that it counts unique individuals tested. Arizona includes antigen tests in its totals figure, so if an individual received both an antigen and PCR test, they are counted only once. Additionally, as of September 25, 2020, Arizona's total test results are drawn from our Total PCR Tests (People) field instead of calculated via positive+negative.
On September 18, 2020, Arizona reported a policy change in the way they count people with positive antigen testing results to comply with CSTE case definitions. This appears to have resulted in a large increase in probable cases and also likely the reason where a decrease in confirmed cases was observed.
On September 16, 2020, Arizona added antigen testing into its main totals figure. This appears to have raised its Total Tests (PCR) number more than usual.
From July 18–August 5, 2020, Arizona’s dashboard stopped displaying confirmed and probable breakdowns for Cases and Deaths, so we could not update Confirmed Cases, Probable Cases, Confirmed Deaths, or Probable Deaths during this period. We were still able to update the total data points for Cases (confirmed plus probable) and Deaths (confirmed plus probable). We will backfill the separate confirmed and probable case and death data if Arizona provides historical numbers.
On June 23, 2020, we updated our historical data for Cumulative hospitalized to match Arizona's dashboard data for "hospitalized by date admitted." Data for this metric is not typically reported until several days after admittance. Our daily updates will continue to compile Arizona’s overall number as of cumulative hospitalizations, regardless of date admitted.
Our latest tweets about Arizona
Our twitter handle is @COVID19Tracking
Arizona and Missouri report only facilities with outbreaks, not actual cases, deaths, or facility names—this appears transparent, but doesn’t convey COVID-19’s true impact. County health depts (Maricopa, AZ and St. Louis, MO) provide both states’ most reliable source of LTC data.
September 1, 2020
But there is good news to report as well. The 7-day new-case average is declining in all four of our major hotspot states: AZ, CA, FL, and TX.
July 30, 2020
The hotspot states remain hotspots, even as their cases plateau a little or even decline. However, we’re now seeing more deaths reported in these states. Today, 773 deaths were reported by Arizona, California, Florida, and Texas alone.
July 29, 2020
We noted Arizona's falling case and completed test counts yesterday. It's worth recalling that on July 9, Governor Ducey said that his state would be doing 35k tests per day by the end of July. 7-Day Rolling Average: Tests reported, 7/9: 13,175 Tests reported, 7/23: 10,492
July 23, 2020
Arizona's cases are declining, and although testing has also fallen, the state's current hospitalization numbers are also down, which is unequivocally good. Still: the state’s two highest death tolls are Saturday (147) and today (134).
July 21, 2020