St. Louis, May 7 (RHC)-- In the U.S. state of Missouri, 422 workers at a Triumph Foods pork plant have tested positive for the coronavirus — but all of them were asymptomatic, according to state health officials. 

Meanwhile, the Smithfield Foods South Dakota pork plant partially resumed operations Monday without testing all of its returning workers.  The Sioux Falls plant was forced to shut down last month after at least 1,000 workers tested positive for the coronavirus and at least two people died.

On Tuesday, Wendy’s said it was running out of meat for hamburgers at hundreds of its restaurants around the United States.   And grocers, including Costco and Kroger, have begun limiting the amount of meat customers can buy amid mounting shortages.