Some of them are on the list of the seven deadly sins, also known as the cardinal vices in the Christian tradition: pride, greed, wrath, envy, lust, gluttony and sloth. Those mind viruses are as old as the human history, and yet we are still not immune to them. They mutate and take different forms, and keep attacking us, and make many of us sick. What's the remedy? Not massive vaccination, I think, but the old-fashioned way of protecting and boosting your immune system, so that it can withstand the attacks of all vicious viruses -)