Tuberculosis disease: new case:
Active TB in a person who has never been treated for TB before, or has active disease from a new genotype.

Tuberculosis disease: relapse or reactivation:
Active TB in a person whose tuberculosis has been non-infectious or quiescent following full, partial or no treatment.

Tuberculosis: latent infection (LTBI): A person with both of the following:

• positive Mantoux test, Mantoux conversion or positive interferon-gamma release assay (IGRA) test AND
• no evidence of active disease.

Tuberculosis: old disease on preventive treatment:
No active disease or latent infection.

For more information, see the Guidelines for Tuberculosis Control in New Zealand 2019 (Ministry of Health 2019).