the best place to learn about it is http://health.allrefer.com/health/nocardia-infection-info.html, as for my son it was resistent to bactrim and augmenten. So they are going to try minicyclin. This has given us a real scare also. He lost 10 lbs before they started to treat it and could barely walk 100 yds without geting short of breath. He still seems to tire easily and pft's have dropped. We live in the southeast but did live in Co for a short time. I was beginning to wonder if he was the only one with it also. Did your son ever cough up the milt seeds that was the first time we really noticed there was something wrong thank you for replying I hope to hear from you again