Dengue Virus

 (DENV) is a bacteria that causes dengue fever.

Trivia

 * A virion of dengue is depicted as a mask of a Tengu, a spirit or yōkai from Japanese folklore. This is a visual pun on the phonetic similarity between the words "Tengu" and "dengue" (デング) in Japanese.
 * Cells infected by the virus are even granted the gust-blowing abilities of a Tengu's aralia leaf.