The plane burst into flames after crashing on the 101 freeway in Agoura Hills in Los Angeles County. There were no injuries.
Over the weekend, the health department found "hand washing deficiencies" and "infection control issues" at the facility.
"From what witnesses have said, it seems that some fans were jumping and dancing on the stairs," said Rome Mayor Virginia Raggi.
Stores including Walmart, Winn-Dixie and Sam's Club sold affected beef products.
Several tourist getaways, including the beach resort of Puerto Vallarta in Jalisco state, lie near the path of the storm, which has weakened to a Category 3.