Another visitor to Yosemite Park has been identified with the hantavirus.
This is the 9th known case so far but the park is warning more than 200,000 people around the world who stayed at the Signature Cabins in the historic Curry Village over the summer.
The unidentified person has since recovered from the potentially fatal virus that has killed three other park visitors so far.
The virus is spread by deer mouse urine and droppings.
