Yes, it's a Guinea Worm, LadyCPlum mentioned it in the OP: it's part of a set showing the removal process (I, personally, find even more distubing the "before" pic). Attachment 627549Attachment 627551Attachment 627550
First the medical staff had to perform the so called controlled emersion by applying some wet cotton to coerce the worm out of the scalp through an incision previously made by a nurse: this process took six weeks (several sessions a day, each one of them lasted one-to-two hours). When finally the bastard emerged, they had to wrap the live worm around a stick (this is a detail from another case) Attachment 627556
and then pull gently and carefully (since to break the worm could have caused even more serious issues due to possible putrefaction and petrifaction): the boy (5 y.o.) showed bravery and strength during the entire process.
You can read the story here http://www.cartercenter.org/news/pub...pi-lokusi.html
Yes indeedy-do, it's called controlled removal. Pull out a tiny bit, leave it on a STEEK, then they usually tape the stick to the area with regulaaar old Scotch tape!