"Signs near the door separating the ""green zone"" from the ""red zone"" read, ""High risk zone, full PPE required"" and ""Suspect patient's ward."" Occidental College professor Mary Beth Heffernan works on her PPE Portrait Project with health care workers at the ELWA II ETU (Ebola treatment unit) in Monrovia, Liberia on Saturday, March 8, 2015.<br /> (Photo by Marc Campos, Occidental College Photographer) Mary Beth Heffernan, professor of art and art history at Occidental College, works in Monrovia the capital of Liberia, Africa in 2015. Professor Heffernan was there to work on her PPE (personal protective equipment) Portrait Project, which helps health care workers and patients fighting the Ebola virus disease in West Africa.<br />
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