Classification of TB cases based on history of Previous TB treatment

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New case - A TB patient who has never had treatment for TB or has taken anti-TB drugs for less than one month is considered as a new case.
Previously treated patients have received 1 month or more of anti-TB drugs in the past. They could be further classified as:
Recurrent TB case - A TB patient previously declared as successfully treated(cured/treatment completed) and is subsequently found to be microbiologically confirmed TB case is a recurrent TB case.
Treatment After failure patients are those who have previously been treated for TB and whose treatment failed at the end of their most recent course of treatment.
Treatment after loss to follow-up A TB patient previously treated for TB for 1 month or more and was declared lost to follow-up in their most recent course of treatment and subsequently found microbiologically confirmed TB case
Other previously treated patients are those who have previously been treated for TB but whose outcome after their most recent course of treatment is unknown or undocumented.
Transferred In: A TB patient who is received for treatment in a Tuberculosis Unit, after registered for treatment in another TB unit is considered as a case of transfer in.
Transferred Out : A patient who has been transferred to another recording and reporting unit and whose treatment outcome is unknown.

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