Nation Tyson Foods processing plant in rural Iowa hit hard by coronavirus with 186 positive cases April 15, 2020Tommy Birch and Tyler Jett, Des Moines RegisterComments Off on Tyson Foods processing plant in rural Iowa hit hard by coronavirus with 186 positive cases COVID-19 cases are soaring in the southeastern Iowa city with increased testing. The Tyson Foods plant, with 186 cases, is city's largest employer.