| Transmission
of M. tuberculosis |
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| • | Spread
by droplet nuclei |
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| • | Expelled
when person with infectious TB coughs, |
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| sneezes,
speaks, or sings |
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| • | Close
contacts at highest risk of becoming infected |
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| • | Transmission
occurs from person with infectious |
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| TB
disease (not latent TB infection) |
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