SEARCHED TERM
Secondary case (of tuberculosis)
DEFINITION
Case of tuberculosis caused by transmission of M. tuberculosis from the source patient.
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SOURCE DEFINITION
Cases of TB disease caused by transmission from the source patient.
OTHER DEFINITIONS
New case of TB disease that is attributed to recent (i.e., <2 years) transmission as part of a scenario under investigation. Technically, all cases are secondary, in the sense that they arise from other cases that are contagious
New case of TB disease that is attributed to recent transmission as part of the scenario under investigation. The period for "recent" is not defined but usually will be briefer than 2 years. Technically, all cases are secondary, in that they originate from other contagious cases.
Cases of TB disease caused by transmission from the source patient
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