IOWA CITY — The Associated Press is reporting, Iowa regulators have issued their first citation to a meatpacking plant with a large coronavirus outbreak that sickened its workforce — a $957 fine for a minor record-keeping violation.

According to the AP the outbreak at the Iowa Premium Beef Plant in Tama in April resulted in 338 of the plant’s 850 workers testing positive for the virus, 80 more than the state previously acknowledged, according to inspection records released Thursday.

The AP reported the Iowa Occupational Safety and Health Administration said on June 1 that it had launched inspections at the Tama plant and four other meatpacking plants where thousands of workers had tested positive.

Records show, according to the AP, that the inspections did not lead to any citations at the other four plants, where at least nine workers have died after contracting the COVID-19 virus. Those included Tyson Foods plants in Waterloo, Columbus Junction and Perry and the JBS plant in Marshalltown.

The agency cited Iowa Premium Beef in August for failing to keep a required log of workplace-related injuries and illnesses, and for failing to provide the document within four hours after inspectors requested it, according to the AP

According to the AP on Sept. 2, Iowa OSHA administrator Russell Perry approved a settlement with the company that reduced the proposed penalties from $1,914 to a $957 fine. The company also agreed to correct the violations. It had already turned over the log the day after the inspection, although it was initially missing information about several workers’ illnesses.

The outbreak in Tama produced one of the first hot spots in the state, according to the AP report.

The beef plant suspended production for two weeks in April after scores of workers became ill. A two-day mass testing conducted by the Iowa Department of Public Health found that 338 workers were infected by then, the records show according to the report.

According to the AP’s report the health department’s deputy director, Sarah Reisetter, nonetheless announced at a news conference May 5 that only 258 workers had tested positive. The department has blamed record-keeping problems for erroneously announcing artificially low numbers of positive tests at another meatpacking plant the same day.

Facing criticism for its response, Iowa OSHA decided to inspect the Tama plant May 21 based on news reports of the 6-week-old outbreak.

According to the AP, inspectors found that four workers were still hospitalized with COVID-19 and saw some employees working close to one another on the floor with no barriers between them. Inspectors noted that employees were wearing surgical-style masks that were issued by the company and required when the plant reopened April 20. The company had allowed workers to begin wearing their own face coverings April 2, four days before the plant shut down, records show.

The plant has taken steps to prevent the virus’ spread by installing plastic barriers where possible, staggering breaks, adding seating, providing hand sanitizer and checking temperatures before entry, according to the report.

CEO Tim Klein praised his company in an open letter published Wednesday for “rapidly adjusting our processes and protocols to improve safety” during the pandemic.

“Our industry was in the local and national news for the wrong reasons during a time when we were all learning how to combat COVID-19 and keep our people safe,” he wrote. “And yet our employees continued to deliver — safe, quality beef products, ideas for improved safety, and time and talents to help their families and communities thrive in challenging situations.”