My Fiance' and I went to a fair last weekend and I believe he ended up with ecoli, from undercooked and old be?

I have been been diagnosed with the ecoli virus from my doctor, however he was only severly sick last monday all day, now in his leftlower ribcage, and kdney area he is having severe pain for 2 days now, I honestly believe he may be sick rom the under cooked ribs, that had been left out way to long.