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CHARTS: What is the coronavirus positivity rate in Texas?

FILE - In this March 3, 2020, file photo, Hawaii state Department of Health microbiologist Mark Nagata demonstrates the process for testing a sample for coronavirus at the department's laboratory in Pearl City, Hawaii. An Associated Press analysis shows that some of the least-populated states, such as Hawaii, with relatively few coronavirus cases received an out-sized proportion of the $150 billion in federal money that was designed to address virus-related expenses. (AP Photo/Audrey McAvoy, File)
FILE - In this March 3, 2020, file photo, Hawaii state Department of Health microbiologist Mark Nagata demonstrates the process for testing a sample for coronavirus at the department's laboratory in Pearl City, Hawaii. An Associated Press analysis shows that some of the least-populated states, such as Hawaii, with relatively few coronavirus cases received an out-sized proportion of the $150 billion in federal money that was designed to address virus-related expenses. (AP Photo/Audrey McAvoy, File) (AP)

HOUSTON – As coronavirus testing continues in Texas, some have wondered how the number of tests being performed compares to the number of cases reported in the state.

According to the Texas Department of State Health Services, there have been more than 7.53 million tests performed in the state since the pandemic began. More than 845,000 cases of coronavirus have been reported in the state. That works out to an overall positivity rate of about 10.09% as of Oct. 21. The first chart below shows that data.

The second chart below tracks the seven-day positivity rate reported by DSHS, starting June 1. The standard seven-day rate as of Oct. 21 was 7.42%. However, on Sept. 14, DSHS added additional metrics to the seven-day positivity rate calculation. One is the positivity rate based on the date a specimen was collected. The other is the positivity rate based on the date a lab test reported a case to DSHS. State officials said these metrics will help give a more accurate picture of the pandemic’s status, correcting for a lag in results being reported.

DHHS officials said the huge drop in the seven-day positivity rate from Aug. 11 to Aug. 12 was due to a backlog of cases being resolved and a decrease in testing demand across the state.

RELATED: These charts track the number of Houston-area coronavirus cases, recoveries and deaths each day

On May 21, Texas health officials disclosed that about 6% of the coronavirus tests that have been performed were actually antibody tests instead of active infections.

Texas Gov. Greg Abbott has said specialized strike teams will be used to help control any outbreaks of the coronavirus that happen as the state’s economy reopens.

Harris County leads the state in the number of coronavirus cases being reported at more than 154,000.

You can view the current positivity rate for the Greater Houston area here.

Clarification:This story was updated on June 17, 2020, to only include results from viral tests. Antibody test numbers are now excluded from the positivity rate calculation.


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