RT Journal Article SR Electronic T1 Essential workers facing higher risks during COVID-19 outbreak: Meat packers, retail workers sickened JF The Nation's Health JO Nations Health FD American Public Health Association SP 1 OP 16 VO 50 IS 6 A1 Kim Krisberg YR 2020 UL http://www.thenationshealth.org/content/50/6/1.1.abstract AB