Here are the pertinent facts straight from the FDA:
The U.S. food supply remains safe for both people and animals. There is no evidence of food or food packaging being associated with transmission of COVID-19 regardless of the status of the worker in a plant. FDA does not anticipate that food products will need to be recalled or be withdrawn from the market should a person that works on a farm or in a food facility test positive for COVID-19. Like other viruses, it is possible that the virus that causes COVID-19 can survive on surfaces or objects. If you are concerned about contamination of food or food packaging, wash your hands after handling food packaging, after removing food from the packaging, before you prepare food for eating and before you eat.