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which one is correct
if PPD test positive start INH
if PPD test positive first do x-ray to exclud active TB before starting INH
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if PPD positive, first step is always CXR and if CXR +ve, multiple drug therapy.
If CXR -ve, treat as latent TB with INH for 9 months.
Never repeat PPD after treatment. It will stay positive.
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what will be PPD result for someone who was vaccinated for TB?