Random: Anyone heard of a connection between chickens & recurrent bone infections?

My teen age son has his second bone infection in 2 years (osteomyelitis) We are trying to figure out is there is an underlying cause for either some type of immune deficiency or something that would make him susceptible for these infections. Essentially staff ( which is on all of us) gets into his blood and even that is not a problem for most people. In him it settles into bone, joint and muscle. Curious to know if there is any data on infections, or low immunity with chicken exposure. We also have a Golden Retriever. He no longer has to pick up poop and I am trying to contain my chickens to the side yard and to make sure we are really clean. It most likely has no effect but what a great place to ask an obscure question with all you experts!!!

 

Thanks for your info. The doctors did some blood work and ruled out the most common blood diseases and autoimmune diseases but still have no answer. He is a six foot five 15 year old high school basketball player so he plays constantly. He also has some acne so their working theory is that staff has a place to enter his blood stream. The first time it was in his SI joint and this time in both hops on the illiac crest. Very disconcerting as he hates to miss any basketball and right now he has some pain with walking. Anyway, they might never find anything I as his mom just want to see if we can minimize the chance of recurrence but that is quite difficult as we are taking the needle in the haystack approach!!! Again thanks for your info and Happy 2013!
Carrie