Biology, asked by pranavchowdary6184, 10 months ago

How do you know latent tb is resistant or active?

Answers

Answered by Anonymous
1

Explanation:

In patients who have not had BCG previously, latent TB is diagnosed if the Heaf test is grade 2, 3 or 4, and have no signs or symptoms of active TB. Repeat Heaf testing is not done in patients who have had BCG (because of the phenomenon of boosting

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