If any person shall, without permission of the commissioner, his designee, or a health officer acting on the request of the commissioner, enter a place of isolation or quarantine, board a conveyance under quarantine, enter the limits of a place designated for the decontamination of cargo or baggage under quarantine, or enter a place designated for the treatment of persons placed under isolation or quarantine and such person is not an employee or agent of the facility providing such treatment, he shall be considered infected and ordered to undergo isolation or quarantine under N.H. Rev. Stat. § 141-C:11. He shall remain there at his own expense until the commissioner determines that there is no threat to the citizenry by virtue of the exposure to the cause of isolation or quarantine.