Question about Cultures - When is it concerning?

I've posted a few times but the quick background is I have a 15 month old son dx CRMS (one disease cause and one variable mutation). He just switched from one clinic that was being reactive to a more proactive clinic last month. The question I have right now is about throat cultures. He has never had a completely clear swab but so far we have been told that nothing he has cultured needed to be treated. I have trusted that and I do still trust that, but I guess I am wondering when a positive culture would warrant treatment or when a positive culture may be something to be more concerned over. He has never cultured pseudo so that's good news and I have understood that to be something more concerning, but at both his last culture at his previous clinic in July and his first culture at his new clinic last month, he cultured "moderate" amounts of Acinetobacter Baumannii. To be clear, I am not doubting the doctor's decision to not treat this. I am just not sure I understand what exactly would trigger treatment in conjunction with a positive culture. So far the list of things he has cultured include A. Baumanni, Chryseobacterium Indologenes, Staph & sphingobacterium multivorum but A. Baumannii is the only one he's ever had show up twice in a row so it's tweaking my interest a little more. I was told by our first pulmonologist that babies are infamous for having all kinds of things show up in their cultures since they are always putting weird things in their mout...
Source: Cystic Fibrosis Families Forum - Category: Respiratory Medicine Authors: Tags: Families Source Type: forums