News Release

UPDATE: Additional 121 Yellowstone employees negative for COVID-19; A total of 1,499 Yellowstone surveillance tests have now returned negative since early June

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COVID-19 mitigations of the Geyser Grill

NPS/Jacob W. Frank

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News Release Date: August 19, 2020

Contact: Morgan Warthin, (307) 344-2015


Employee Surveillance Testing  

Yellowstone’s August 18 press release reported 121 “pending” employee COVID-19 tests taken late last week. All of these tests have returned negative, bringing the park’s total asymptomatic negative test count to 1,499 since early June (467 negative tests in the past three weeks).  

The park, in partnership with the states of Montana and Wyoming and surrounding counties, will test approximately 150 additional front-line employees on August 20. More information about the surveillance testing effort is available in park news releases dated June 30 and June 4
  • Total tests conducted to date: 1,499
  • Total tests with negative results: 1,499
  • Total tests with positive results: 0
  • Total tests with results pending: 0
The original news release, dated August 18, 2020, can be found at

Last updated: August 19, 2020

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