Abstract: An image capturing device and an image capturing system are provided for capturing images in the oral cavity. The image capturing device includes: a columnar main body having a prescribed length between the base and leading ends, the longitudinal direction of the main body follows the direction in which the main body is inserted into the oral cavity; a grip disposed on the same line as the main body on the base end side; a camera for capturing a subject image based on reflected light radiated from a light source and reflected by the oral cavity, the camera being disposed on the same line as the main body either inside the main body or closer to the base end than the main body; and a display for displaying the subject image captured by the camera, the display being disposed on the same line as the main body.

Abstract: A pharmaceutical composition for treating an influenza virus infectious disease, containing an anti-influenza virus agent as an active ingredient is provided. The anti-influenza virus agent is administered to a patient determined to be positive for the influenza virus infectious disease based on an intraoral image captured using an intraoral imaging apparatus.

Abstract: A pharmaceutical composition for treating an influenza virus infectious disease, containing an anti-influenza virus agent as an active ingredient is provided. The anti-influenza virus agent is administered to a patient determined to be positive for the influenza virus infectious disease based on an intraoral image captured using an intraoral imaging apparatus.