New Jersey health officials have confirmed the state’s first measles case of the year, linked to a Hudson County resident who recently traveled internationally, and warned that people who passed through Newark Liberty International Airport last week may have been exposed to the virus.

The New Jersey Department of Health said the infected individual visited Terminal B at Newark Liberty on April 14 between 5:30 a.m. and 9 a.m., and later sought treatment at the pediatric emergency department at Hackensack University Medical Center from late April 17 into the early morning hours of April 18.

Officials said the state is not experiencing a measles outbreak, which the Centers for Disease Control and Prevention defines as three or more related cases. No additional associated cases had been identified as of Wednesday.

Health officials urged residents who may have been at either location during those times to monitor themselves for symptoms — which include high fever, cough, runny nose, watery red eyes and a distinctive rash that typically appears three to five days after initial symptoms. The rash generally begins as flat red spots at the hairline before spreading downward across the body.

Measles can lead to serious complications including pneumonia and encephalitis, a swelling of the brain. Pregnant people who contract the disease face risks including miscarriage, premature birth and low birth weight.

Anyone who suspects an exposure should contact a health care provider or local health department by phone before seeking in-person care, officials said, noting that arrangements can be made for safe evaluation that protects other patients and medical staff.

Those potentially exposed could develop symptoms as late as May 11, the department said.

The case underscores the dangers of traveling internationally without being fully vaccinated, according to the health department. Infants between 6 and 11 months old should receive one dose of the measles, mumps and rubella vaccine prior to international travel, followed by two additional doses after their first birthday.

The department said it is working with local health officials on contact tracing efforts and will post updated information at nj.gov/health/measles.