Handling food safely is of vital importance to our health. As children it is instilled in us that we must wash our hands after going to the toilet, and also before eating, but it is one of those rules that every generation learns, but is seldom explained in detail.
As a living organism we are host to parasites. Whilst we might like to think that it is only animals and particularly our pets that have worms and harmful bacteria, we provide just as welcoming an environment in our own bodies.
The real danger occurs in the very young and the elderly who tend to have either immature or repressed immune systems. The parasites or pathogens are able to take hold and overcome the bodies weakened defense systems.