BELTON, TX -- A Central Texas school district has temporarily closed three of its campuses after two of its students traveled on the same flight as a nurse who has since been diagnosed with Ebola.



The Belton Independent School District campuses and some school buses will be disinfected on Thursday. The superintendent announced the closures of North Belton Middle School, Sparta Elementary and the Belton Early Childhood School late Wednesday.



The students' parents are keeping them home voluntarily for 21 days.



The nurse, Amber Vinson, was diagnosed with Ebola on Wednesday. She flew Monday from Cleveland to Dallas.



Ebola patients aren't considered contagious until they have symptoms. The federal Centers for Disease Control and Prevention director says it's unlikely that others on the plane were at risk because Vinson wasn't vomiting or bleeding.