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A member asked:
How can ptb relapse or reinfection be prevented? please help.
A doctor has provided 1 answer
Depends on details: For a person with a positive PPD skin test and a negative chest x-ray, if he had a BCG vaccine in the past, he can do a Quantiferon TB blood test to see if he was exposed to real TB or just to the BCG shot. If he never had a BCG, his doctor may still ask for a TB blood test. Helpful site: https://www.who.int/tb/challenges/ltbi_factsheet_2014.pdf?ua=1
Answered 9/22/2019
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