new mattressess for 2nd child

[suzannahp]

hi,
my four year old is moving out of his cotbed into a single bed to make way for baby no 2.
i have heard, but am not sure that it is recommended that you buy a new mattress for every child????
apart from needing a good clean and air there is nothing wrong with the old one but am confused and dont want to put baby 2 at any risk??

I did reuse dd's mattress as it was in good condition and had a removable washable cover. The official advice from the SIDS website is this:

It is very important that your baby?s mattress is kept clean and dry. Ideally you should buy a new mattress for each new baby. If you are not able to do this, use the one you have, as long as it was made with a completely waterproof cover and has no tears, cracks or holes. Clean and dry it thoroughly. Check that the mattress is in good condition; is firm, not soft; fits the cot without any gaps; and doesn?t sag. Never sleep your baby on a pillow, cushion, bean bag or waterbed.