That's what I said in the second bit: > A well engineered bioweapon would be a virus that goes undetected for a few months and then happens to kill the host du

That's what I said in the second bit: > A well engineered bioweapon would be a virus that goes undetected for a few months and then happens to kill the host due to complications. That can wipe out an entire country or possibly the whole human race. I don't think this is possible biologically. "Killing the host" is not some natural thing that happens with Viruses. It's a complex process of immune system + dosage. It's not like virus has any evolutionary interest in demobilizing the host. It goes against the evolutionary pressure. That's why I said "happens to kill the host", due to complications.