Local health officials are advising residents to take the proper steps out of extreme caution in the wake of a hantavirus outbreak on a Dutch-flagged cruise ship this month.

According to NPR, 17 Americans returned home Monday after being quarantined on the cruise ship for several weeks after three people died from hantavirus exposure. During the passengers’ flight from the Canary Islands to Nebraska, one American tested positive for hantavirus while another showed symptoms.

According to the Centers for Disease Control and Prevention, people can contract hantavirus through contact with rodents such as rats and mice, especially through exposure to their urine, droppings and saliva. Symptoms — including fatigue, fever and muscle aches — can take four to 10 days, or in rare cases several weeks, to appear.

Door County Public Health Nurse Katie Van Lanen says she does not expect the latest outbreak to affect local residents. She adds that people can take precautions just like any other respiratory disease.

Van Lanen added that hantavirus exposure is rare because the virus is not easily transmitted from person to person.