A worker disinfects boots as people look on in the “red zone” where they are being treated for Ebola at the Bong County Ebola Treatment Unit in Gbarnga, Liberia, Oct. 28. Dr. Timothy Flanigan, professor of medicine at Brown University School of Medicine and permanent deacon for the Diocese of Providence, R.I., left his wife and five kids in August and traveled to Liberia to treat Ebola victims because I thought I could make a difference. (CNS photo/Michelle Nichols, Reuters)