Yosemite National Park officials say a second person is dead from the Hantavirus.

Listen:

This after they visited the park back in June. It's the third confirmed case of the ailment and another is under investigation. Park officials are urging summertime visitors of Curry Village to take note of possible symptoms that may include fever, aches and chills. Health officials say exposure to saliva or urine from infected rodents spreads the virus.

Dr. Chris Belcher of Peyton Manning Children's Hospital says the virus is spread when people are in close proximity to rodent droppings. Belcher says the ailment is not spread from human to human. Belcher says at one time, the ailment was specific to the American southwest, but has spread to several states. He says the ailment can cause severe lung and respiratory infection. He adds there's no specific treatment, but supportive care.

Belcher says elderly people and young children with developing or shaky immune systems appear most at risk.