A person who traveled on the Grand Princess cruise ship last month has become the first coronavirus case confirmed in Santa Cruz County, officials announced Saturday.

The person, who authorities are not publicly identifying, was one of the passengers aboard the ship from Feb. 11 to 21 for its trip from San Francisco to Mexico. The positive test result was confirmed Friday night.

The person has not been hospitalized, and is instead recovering at home with symptoms Santa Cruz Health Services Agency spokesman Jason Hoppin described as “fairly mild.”

The public health department is now “conducting a thorough investigation to identify any potential exposures that may have occurred,” officials said. They emphasized the person who tested positive did not catch the virus through community spread.

Multiple other Santa Cruz County residents who also traveled on the cruise ship last month — Hoppin declined to say precisely how many — are being “actively monitored” and are under self-quarantines, according to the county.

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Hoppin also noted the county is likely to see more cases of the illness, particularly as tests for it become more widely available.

Stressing that the overall risk to the community from coronavirus remains low, county officials directed residents who want to learn more to visit their webpage about the illness. You can also call 211 for information about the virus, or text “coronavirus” to 211211.

They also offered the same warnings public health leaders have been making for weeks to contain its spread: wash your hands or use an alcohol-based sanitizer regularly, cover coughs or sneezes with a tissue or your sleeve instead of your hands, avoid touching your face, regularly clean frequently touched surfaces and stay home if you’re feeling sick.