A case of the new coronavirus was confirmed in Wisconsin on Wednesday — bringing the number of people infected with the deadly disease in the US to 12.

The adult patient traveled to Beijing before falling ill, and was exposed to people with the virus while traveling in China, officials with the Wisconsin Department of Health Services said.

The unidentified person’s condition is reported to be mild, and did not require hospitalization, officials said. They are in self-quarantine at home.

“The risk of getting sick from 2019 novel coronavirus in Wisconsin is very low,” said State Health Officer Jeanne Ayers. “We are responding aggressively to the situation and monitoring all developments.”

There are 11 other confirmed cases in the US, including six in California, two in Illinois, and one each in Washington state, Arizona and Massachusetts.

The Centers for Disease Control and Prevention on Wednesday said all known patients are “doing well.”

“The ones who were sicker have improved,” said Dr. Nancy Messonnier, director of the CDC’s National Center for Immunization and Respiratory Diseases.