After a trip to the Dominican Republic, Katie Stephens and Eddie Zytner noticed their feet starting to swell. Then their skin became covered with swirly red marks and fluid-filled blisters. The pain became so intense the couple couldn't walk. Soon, they discovered the cause of the problem--parasitic hookworms living in their flesh Read Katie and Eddie's harrowing tale of survival, and learn all about parasitic worms and the deadly diseases they cause...