The USB worm is a scion of the now effectively extinct boot sector virus. Evolution means the USB worm has adapted to its new environment. Despite pockets of resistance the spread of the worm is far and wide. This scenario is beginning to have a large negative impact on other species such as the human. Human education and vigilance is a must if the species of USB worms and its distant cousins are to be eradicated. The choice of habitat may also be restricted by USB device control. The human should also be able to prevent these USB worms from being able to invoke themselves on hard drives.”]
Source: https://nakedsecurity.sophos.com/2009/01/31/the-worm-that-turned/