Bo the packing industry is considered essential and it appears that most have remained open throughout this time. However, there have been large numbers of people coming down with COVID in that industry.
I am pretty comfortable about the reliability of there being an increase of 260 cases last week here in Maryland that were workers from the poultry processing plants about 60 miles from my house. They have not closed those plants, but may soon.
I read from MSNBC (now this could be fake news) that over 1600 new cases in Iowa that were workers from meat packing facilities. Some of those plants may have closed.
I have heard that some farmers (again not fully vetted) are killing their animals since they are not able to send them to packing/processing plants and effectively cutting their losses of additional feed and care costs.