Another Tyson Foods (TSN) plant has reportedly had hundreds of employees test positive for the coronavirus in Iowa.

As many as 555 workers from Tyson’s Storm Lake pork processing plant are confirmed to have COVID-19, the Iowa Department of Public Health said. The plant is reported to have a total of 2,517 workers.

The Storm Lake plant has been temporarily shut down as Tyson said in a statement on Thursday (via the Des Moines Register), “Additional deep cleaning and sanitizing of the entire facility will be conducted before resuming operations later next week.”

This is not the first plant in Iowa with a significant number of COVID-19 cases among workers as Tyson has shutdown other facilities located in Waterloo, Columbus Junction, Waterloo, and Perry.

The company also has shut down a series of processing plants in other states, including Dakota City, Nebraska, Logansport, Indiana, and Pasco, Washington, as large numbers of employees test positive for the virus. Most of the facilities have resumed operations.

The company said it has been working with local health officials and conducting large-scale testing of its employees at the plant, The Hill reported. The company expects those test results to be released next week.

A Tyson spokeswoman told the Des Moines Register, “We will disclose verified test results, once complete data is available, with health and government officials, team members and other stakeholders.”

Shares of Tyson Foods stock were down 3.22% as of 11:27 a.m. EDT on Friday.

Tyson Foods A package of Tyson Foods Inc. brand bacon is arranged for a photograph in a refrigerator in Tiskilwa, Illinois, U.S., on Tuesday, July 28, 2015. Tyson Foods Inc. is scheduled to report third quarter earnings on August 3. Photo: Getty Images/Daniel Acker/Bloomberg