Sanjiv Pasala , Between 2001 and 2010 , continues to make progress at CDC . Zachary Reyna of Florida died last month of the parasite , even after receiving the same experimental drug that was given to Kali . Hardig is walking with assistance during therapy sessions , hospital spokesman says . United States causes fatal brain infection , according to the Arkansas Children 's Hospital . Parasite generally found in people who swim in warm , fresh water .
Sanjiv Pasala , Between 2001 and 2010 , continues to make progress at CDC . Hardig is walking with assistance during therapy sessions , hospital spokesman says . United States causes fatal brain infection , according to the Arkansas Children 's Hospital . Parasite generally found in people who swim in warm , fresh water .