Sept. 15, 1970
A victim of American bombing, ethnic Cambodian guerrilla Danh Son Huol is carried to an improvised operating room in a mangrove swamp on the Ca Mau Peninsula. This scene was an actual medical situation, not a publicity setup. The photographer, however, considered the image unexceptional and never printed it.
IMAGE: VO ANH KHANH/ANOTHER VIETNAM/NATIONAL GEOGRAPHIC BOOKS
I mean in a regular surgery anything below waist level or so is already considered non-sterile, So I think the risk of doctors accidentally dipping their hands in the swamp water is pretty low :P