Some babies are just more prone to UTI's than others, especially if their mom or dad had them frequently as children and teenagers. My brother has had a couple UTI's in his life, and he is circumcised.
The only people I have actually heard about that are at an increased risk for UTI's if they are uncircumcised are people with spina bifida or spinal cord injuries, and that's because most of them have to use intermittent or Foley catheters all the time, which increases the risk of a UTI. I have a friend who is uncircumcised and has spina bifida, and his urologist told him this recently. My boyfriend is uncircumcised and the only thing he finds annoying about it is when he uses a condom catheter (external catheter system), its hard to get one to stay on because of the foreskin, so he has to buy specialy made ones for uncircumcised males.
To tell you the truth, your son might have got the second UTI's from the ER actually inserting the catheter into him, since you are putting a foreign object into the body. You might also leave him without a diaper for a little bit to allow more air to circulate, so infectious bacertia is less likely to multiply.
Jessie
(single mommy to Emma, 3 1/2 years and Angela, 2 years)