WAUSAU, Wis. — A Marathon County resident has been diagnosed with measles after being exposed during out-of-state travel, according to the Wisconsin Department of Health Services. Health officials said the case is not connected to an ongoing measles outbreak in southwest Wisconsin. Investigators are working to identify and notify people who may have been exposed, and no public locations linked to the case have been identified. If investigators identify a public exposure site, DHS said it will post the information on its Outbreaks and Investigations website. Measles spreads easily through the air and can remain airborne for up to two hours after an infected person coughs or sneezes. Symptoms generally appear 10 to 21 days after exposure and may include a runny nose, cough, fatigue, high fever, red or watery eyes and a raised red rash that typically begins near the hairline before spreading to the arms and legs. Anyone who develops symptoms should stay home and avoid work, school, shopping and public transportation. Health officials urge people to call a doctor or clinic before arriving so staff can take steps to prevent exposing other patients. The measles, mumps and rubella vaccine is the primary protection against measles. Residents can check their immunization records through the Wisconsin Immunization Registry or contact a health care provider or local health department. Marathon County residents with questions can call the county Health Department’s Measles Resource Line at 715-261-1999. Additional information is available through the Wisconsin Department of Health Services’ measles webpage.