▎ 摘　　要

NOVELTY - Field effect transistor (FET) integrated sensor comprises riboregulatory factor (switch RNA) capable of recognizing a virus-specific RNA and FET that detects expression of reporter gene of riboregulatory factor having at least one electrode that is formed to detect a change in current flow. USE - The FET integrated sensor is useful for diagnosing virus. ADVANTAGE - The FET integrated rapidly diagnoses a virus. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) virus diagnostic device comprising the sensor; and (2) method for providing information on presence or absence of a virus in a sample comprising a virus by using the sensor.