By JoNel Aleccia
Health writer
MSNBC
Amy Warren had never heard of the germ that made her so miserable.
In January 2005, weeks after giving birth to her daughter, the Ohio mother of two knew only that she was in pain, suffering cramping so severe she felt like she was still in labor. Then came the diarrhea, uncontrollable bouts up to 50 times a day, which left Warren weak and raw and stranded in her Maineville home.