The second tourist within a month to Yosemite National Park has been found to have contracted the plague.

The California Department of Public Health confirmed Tuesday a “presumptive positive” for plague in a patient who visited Yosemite and the Sierra National Forest in August.  The Centers for Disease Control is now testing the patient, who’s demographic information is not being released to the press.

In late July, a child from Los Angeles County became infected with the plague after camping with their family at Crane Flat Campground in Yosemite National Park.  The child is still hospitalized but recovering from the infection.

“Although the presence of plague has been confirmed in wild rodents over the past two weeks at Crane Flat and Tuolumne Meadows campgrounds in Yosemite, the risk to human health remains low,” the state Department of Public Health said in a statement. “Action to protect human and wildlife health by closing and treating campgrounds was taken out of an abundance of caution.”

Health officials say that campers should never feed squirrels and other small animals.  They also said for campers to avoid making camp near rodent burrows and to wear long pants and use bug repellant to keep the fleas that carry the disease at bay.

The plague has killed two people so far this year in Colorado.  The Centers for Disease Control says there is an average of seven human plague cases per year in the United States.