|found on Know Your Meme|
This is, of course, impossible for the time being. That being said, there are a number of medical implants that have some form of computerized components. The number of such implants are more likely to increase over time than they are to decrease, and the computers being used in them are going to increasingly be general purpose computers that can in fact be affected by viruses and other malware. So in a way, computer viruses could eventually spread to humans by virtue of spreading to the computerized components inside some of them.