Sioux City Journal: After nearly a quarter of its workers at a Storm Lake pork processing facility tested positive for the novel coronavirus, Tyson announced Thursday that it will temporarily halt operations. On Thursday, state health officials also confirmed that 555 workers at the plant tested positive for the virus. The vast majority of the plant’s roughly 2,400 workers live in Buena Vista County, which surpassed 700 total COVID-19 cases that same day.