Maryland

April 9, 2021, 11:10 AM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]
Tertiary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_SerologyTests/FeatureServer/0/query?where=1%3D1&outFields=%2A

Metadata

Total test resulst field
Total Tests (PCR)
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

As of October 16, 2020, Maryland’s total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. This will result in TotalTestResults only going back to 3/24 instead of 3/5.

On August 31, 2020, we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens).

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

December 18, 2020, 9:06 PM PST

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]
Tertiary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_SerologyTests/FeatureServer/0/query?where=1%3D1&outFields=%2A

Metadata

Total test resulst field
Total Tests (PCR)
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

As of October 16, 2020, Maryland’s total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. This will result in TotalTestResults only going back to 3/24 instead of 3/5.

On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens).

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

December 8, 2020, 12:54 PM PST

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]
Tertiary site
https://coronavirus.maryland.gov/datasets/mdcovid19-serologytests/data

Metadata

Total test resulst field
Total Tests (PCR)
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

As of October 16, 2020, Maryland’s total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. This will result in TotalTestResults only going back to 3/24 instead of 3/5.

On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens).

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

November 23, 2020, 9:49 AM PST

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]

Metadata

Total test resulst field
Total Tests (PCR)
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

As of October 16, 2020, Maryland’s total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. This will result in TotalTestResults only going back to 3/24 instead of 3/5.

On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens).

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

October 23, 2020, 4:03 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]

Metadata

Total test resulst field
Total Tests (PCR)
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

As of October 16, 2020, Maryland’s total test results are drawn from our totalTestsViral field instead of calculated via positive+negative. This will result in TotalTestResults only going back to 3/24 instead of 3/5.

October 18, 2020, 11:00 AM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]

Metadata

Total test resulst field
posNeg
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

October 16, 2020, 12:03 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/
Secondary site
https://services.arcgis.com/njFNhDsUCentVYJW/arcgis/rest/services/MDCOVID19_TestingVolume/FeatureServer/0/query?where=1%3D1&outFields=*&outStatistics=[%7B%22statisticType%22%3A+%22sum%22%2C+%22onStatisticField%22%3A+%22number_of_positives%22%2C+%22outStatisticFieldName%22%3A+%22total_number_of_positives%22%7D]

Metadata

Total test resulst field
posNeg
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

October 9, 2020, 4:03 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Total test resulst field
posNeg
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

September 25, 2020, 9:03 AM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Total test resulst field
posNeg
CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

September 18, 2020, 11:03 AM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

CTP website preferred total test units
Specimens
CTP website preferred total test field
totalTestsViral

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

September 2, 2020, 8:03 AM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). On August 31 2020 , we updated Maryland's Total PCR tests (specimens) and Positive PCR tests (specimens) prior to 8/16 to match state-provided "Testing Volume" data.

August 31, 2020, 1:03 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Between March 12 and March 28, 2020, Maryland did not report data for negative tests.

On July 31, 2020, we began capturing Maryland's data for Positive PCR tests (specimens). We plan to back-fill the state's historical time-series for this metric, which begins in March.

August 25, 2020, 4:02 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Between March 12 and March 28, Maryland did not report negative test numbers.

On July 31, we began capturing MD's data for positive results of PCR tests in units of tests (as opposed to in units of persons tested). We will backfill the time series, which begins in March.

July 31, 2020, 12:02 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Between March 12 and March 28, Maryland did not report negative test numbers.

July 28, 2020, 4:02 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Didn't report negatives between 3/12 and 3/28.

June 4, 2020, 6:01 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Didn't report negatives between 3/12 and 3/28.

June 4, 2020, 2:01 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

June 1, 2020, 6:01 PM PDT

State COVID websites

Primary site
https://coronavirus.maryland.gov/

Metadata

Notes

Didn't report negatives between 3/12 and 3/28.

March 27, 2020, 4:44 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Maryland does not report negative test results anymore. We are using the last negative provided as of 3/12.

March 25, 2020, 4:00 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Maryland does not report negative test results anymore. We are using the last negative provided as of 3/12.

March 20, 2020, 10:00 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Maryland does not report negative test results. We are using the last negative as of 3/12.

March 20, 2020, 11:00 AM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative on 3/12. Use time = 10:00. Deaths now reported on website.

March 19, 2020, 4:00 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative on 3/12. Use time = 10:00. Death reported by media.

March 18, 2020, 10:00 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative on 3/12. Use time = 10:00.

March 18, 2020, 11:00 AM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative on 3/12. No pending counts. Use time = 00:00.

March 17, 2020, 10:17 AM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative on 3/12. No pending counts. Use time = 00:00.

March 15, 2020, 2:06 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

Last negative counts from 3/12 No pending counts. Use time = 00:00.

March 14, 2020, 3:56 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

March 12, 2020, 9:01 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes

The website says that the data is "real time" so we mark our data entries with the current date and time: 00:00. As of March 7th, Maryland stopped reporting "pending tests".

March 12, 2020, 2:21 PM PDT

State COVID websites

Primary site
https://phpa.health.maryland.gov/Pages/Novel-coronavirus.aspx

Metadata

Notes