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The investigators think that the health care workers who contact frequently with active tuberculosis patients have more increased prevalence of LTBI compared with those who don't.
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Inclusion Criteria:
Exclusion Criteria:
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latent tuberculosis prevalence of health care workers
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| ID | Term |
|---|---|
| D014376 | Tuberculosis |
| ID | Term |
|---|---|
| D009164 | Mycobacterium Infections |
| D000193 | Actinomycetales Infections |
| D016908 | Gram-Positive Bacterial Infections |
| D001424 | Bacterial Infections |
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| D001423 | Bacterial Infections and Mycoses |
| D007239 | Infections |