Drivers on April 8 parked outside the hospital and honked, flashed lights and cheered for the workers as confirmed cases of the new coronavirus continued their climb in the region.
Some adorned their windshields with "Thank you" signs and other messages, which workers could see from their windows.
The event was organized by the hospital and supported by the city of Plano, which promoted the event and sent some employees to participate.
Plano Fire-Rescue sent engines and personnel to be part of the display.
The show of support comes as the number of confirmed cases in Collin County grew to 378, according to county health officials.
At least 29 people in the county had tested positive for COVID-19 and were hospitalized, Collin County reported. Health officials had previously told county commissioners that these hospitalization numbers were likely incomplete because of limitations in testing and reporting.