Body coverall and medical gowns are worn by front-line medical staff who have constant contact with patients. American National Standards Institute (ANSI) and the Association of the Advancement of Medical Instrumentation (AAMI) describe AAMI-PB 70 as protective apparel and drapes intended for use in health care facilities that are resistant to the pathogen, Infectious diseases (non-airborne), and large amounts of fluid exposure over long periods.