At least 10 public schools in Hawaii have students who have come down with mumps as part of a growing outbreak.
The state said Leilehua High School has one confirmed case of the contagious disease. The Department of Education issued a letter saying the person did go to school for at least one day during the infectious period, but it's unclear of that person was a student or staff member.
The state previously declined to name the others schools, citing a federal student privacy law that does not appear to apply.
State health department officials have previously identified cases of mumps at Central Middle School in urban Honolulu and Jobs Corps Center in Waimanalo.
On Tuesday, the state Health Department said there are 55 confirmed cases of mumps statewide this year, the most since 2001.
Vaccination is the best defense against the disease, but does not offer complete protection.
Mumps is spread through saliva when an infectious person coughs or sneezes. A tender, swollen jaw is an outward symptom.
So far none of the cases this year have required a hospital stay.