The superintendent in one New Hampshire school district canceled school Monday as a precaution because an employee was advised to self-quarantine after traveling on a bus with a person diagnosed with the coronavirus.

Superintendent Susan Givens in Newmarket sent a letter to parents Sunday night.

Givens said the employee, who isnโ€™t a teacher, was contacted by the Centers for Disease Control Prevention. The agency asked the employee to self-quarantine because she traveled on a bus with a person who was just diagnosed with the coronavirus. Givens said, โ€œPresence on a bus does not mean that this employee was exposed to the virus.โ€

Givens said that neither the school employee nor her family are experiencing symptoms and that the โ€œself-quarantine is just a precautionary measure.โ€

โ€œI feel that it is important to take this precaution for the health and peace of mind for all members of our learning community,โ€ Givens said. She said more information would be provided.

The district has an elementary school and a junior-senior high school.

State public health officials said Sunday they are monitoring about 150 people after the number of positive coronavirus cases in the state doubled to four.