Shut up

guniea worm disease絲蟲病
eradicate-to destroy or get rid of something completely, especially something bad.
extract
(1) a short passage from a book, piece of music. etc.that gives you an idea of what the whole thing is like.
eg. The following extract is taken from her new novel.
(2) a substance that has been obtained from something else using a particular process.
-yeast酵母 extract
-face cream containing natural extracts (萃取物)
papyrus 紙莎草[U]

http://www.scientificamerican.com/podcast/episode/ex-president-wins-campaign-against-ghastly-guinea-worm/