Story highlights California health authorities are looking into a "presumptive positive case of plague"

The case involves a visitor from Georgia who went to Yosemite, the Sierra National Forest

An earlier case also visited Yosemite; 2 others in Colorado died from the plague earlier this year

(CNN) California authorities on Tuesday reported they're looking at a second person with the plague in the state -- and, like the other case, this one visited Yosemite National Park.

The California Department of Public Health announced "a presumptive positive case of plague" involving someone from Georgia who had spent time in early August in the state.

Before feeling sick, this person visited Yosemite, the Sierra National Forest and nearby areas. No other details were given, including who the person is, their current medical condition, and where exactly he or she stayed overnight. Nor is it certain this person contracted the plague while in California.

Still, the report suggests that two people recently in California have a disease best known for killing millions centuries ago that -- despite all the advances of modern science -- remains a real present-day problem.

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