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 Question:
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					| My daughter is 15 months old and needs her immunizations this month. In addition to the regular shots, I'd like her to have a TB test. How long do I have to wait between the test and the actual TB shot? 
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 Answer:
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					| Prior BCG vaccination is not a contraindication for PPD skin testing.   Both PPD testing and BCG vaccination can in some cases result in a strong local skin reaction with swelling, pain, redness and occasional ulceration at the injection site.   It's permissible to administer the tuberculin skin test EITHER on the same day that live-virus immunization is administered OR 4-6 weeks later.   I'm not clear from what you say below if you are intending to first have the child have a PPD test and then a BCG vaccination.... if you are, suggest you discuss this with your paediatrician.   Hope this helps. 
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