The parents of 7-year-old Sierra Jane Downing thought she had the flu when she felt sick days after camping in southwest Colorado.
It wasn't until she had a seizure that her father knew something was seriously wrong and rushed her to a hospital in their town of Pagosa Springs. She had a 107-degree fever, and doctors were baffled by the cause.
"I didn't know what was going on. I just reacted," Sean Downing said. "I thought she died."