What is USB virus?

A USB Virus is one type of virus affected from generally  pen drives.A USB  virus is very dangerous virus it even struck up your operating sysytem.Most of the people dont know about how to use pendrives.Most of the harmful Viruses come lot from pendrives.Before using pendrives keep a note of how to use removable media such as pen drives,memory cards,etc.A USB(universal serial bus) virus is generally a parallel data transfer device where information travel through parallely rather than serially.Their is a great scope of dreadful worms to enter into your computer through these parallel trasfer devices.