回复：回复：美加两国不给小孩种BCG疫苗,他们大部分的医生不明白.

****Disclaimer: I may not have medical license in your State. The following is not medical advise****

Here are the standard practices in this matter:

1) treat as if your son has active TB which there is no evidence.

2) If blood test including ESR and chest x-ray all negative and your son has no symptom, that is the end of it. No treatment needed.

Then:

Gently present some printed materials from CDC webpage and leave them to the pediatrician's secretary. Then call the pediatrician, not face to face, ask him could your son not been treated. Do mention very likely potention side effects and damages to your son's liver if anti-TB meds are given for nothing.

If he is not reasonable, looking for another pediatrician.

Hope that helps.