Private high schools in Maine are asking Chinese students to not travel home during the upcoming break amid concerns of a new virus.

The schools’ announcement comes as the World Health Organization declared the new virus an international health emergency Thursday.

The Bangor Daily News reports that that some of the state’s private schools have also called off administrators’ upcoming recruiting trips to China as a precaution.

The schools have consulted with public health agencies regarding how to best respond. There has been no confirmed cases of virus in Maine or anywhere else in New England.