Which must, of course, only increase the sense of shock, grief, guilt and, for parents, isolation, if it happens. This is what fuels paranoid parenthood: Please dont let me be the one who fails.
One of my great-grandmothers was proud to be able to say 'I have had 11 & reared 8' - meaning that only 3 of her children (born mostly in the 1890s) had died. She was a real martinet - that achievment made her word law. She herself lived to over 90 & died when I was about 5. I have one very vivid memory of her walking across a room, ramrod straight in her green overall apron. She was still active in the family bakery.
It makes me shiver now to think what those experiences must have been like. A childs death is no less painful because less rare - think of Darwins devastation at the death of his 10-year old daughter.
Postscript
And I realise Im not just fretting about the 1 million to 1 accident or abduction but also how indefensibly negligent I could appear. After the McCanns all paernts scent witch-hunt in the air
Janice Turner: The Times 19 May 2007