Hope this is the right place to post this.

I read on the weekend that a study has found that many cases of SIDS could be due to old mattresses being used. Some germ gets in the mattress and when the baby moves it escapes from the mattress. Some babies immune systems are not well enough developed to fight the bug and it then results in SIDS. I must stress it said that this was thought to be the cause of only some SIDS cases.

They recommended that all babies should have new mattresses. Who knows, it could be some mattress manufacturer who did the research, but just in case there is some fact to it I thought I'd post the info here for anyone who is interested.