A female patient, who had been suffering from fever, cold and headache, fled from the isolation unit of Dhunat Health Complex on Sunday.
Shanta Khatun, a garment worker and wife of Nazrul Islam of Kalerpara union of Dhunat upazila, had been suffering from the symptoms since her return from Dhaka one week ago, said Dr Nurul Amin, deputy assistant medical officer of the health complex.
She was admitted to the upazila health complex on Friday.
However, the patient fled from the isolation ward of the hospital before her sample was collected for test, said the physician.
Kripa Sindu, officer-in-charge of Dhunat Police Station, said he was informed about the matter.
He said they were trying to reach out the patient following the address.