The difference is that with a human you vaccinate at a much lower frequency. With a computer you have weekly anti-virus updates, many different software program

The difference is that with a human you vaccinate at a much lower frequency. With a computer you have weekly anti-virus updates, many different software programs to patch (not just the OS), and all the complexity of running a huge variety of software on a huge variety of hardware. The simplest solution would be to compel operating system manufacturers (not consumers) to provide adequate safeguards similar to what the FCC does to the airwaves.