DISEASES
'(<a href="http://www.j-archive.com/media/2005-10-21_DJ_22.jpg" target="_blank">Cheryl of the Clue Crew, at the Smithsonian Institution, holds up a small needle.</a>)  By dispensing just enough vaccine, the <a href="http://www.j-archive.com/media/2005-10-21_DJ_22a.jpg" target="_blank">bifurcated needle</a> is the only medical instrument to eradicate a disease, this one eliminated in 1979'
smallpox