What should you know about the latent stage of TB?

TB infection and TB disease are not the same. During the latent stage, the immune system holds the germs in check, so a person generally feels well and cannot pass TB to others through breathing, coughing or speaking. Active TB develops when the germs begin multiplying and cause tissue inflammation or illness. The change is more concerning when immunity is reduced by HIV infection, certain medicines or other health conditions. A healthcare professional uses the test result together with your history and examination; a screening test alone does not describe the whole situation.

Book an appointment to review the result and your personal risk. You may be asked about contact with TB, earlier treatment, current medicines and immune health. Further testing can help distinguish inactive infection from active disease. If preventive treatment is recommended, take each dose according to the prescribed schedule and mention new symptoms or medicine reactions. Do not share tablets or restart an old course without advice. Keep follow-up appointments so the clinician can check your response and adjust care safely.

Arrange prompt medical review for a persistent cough, fever, night sweats, chest discomfort, unexplained weight loss or increasing fatigue. Seek emergency care if you are struggling to breathe, coughing blood, fainting or becoming confused. These warning signs have several possible causes, but they require assessment for active TB and other urgent conditions. A person with latent infection who develops new symptoms should not assume the symptoms are harmless simply because an earlier test showed the latent stage.

Ask what your result means, whether active TB has been ruled out, and whether you need imaging or another examination. Ask why a particular preventive medicine is being suggested, what interactions to avoid, which reactions need urgent help, and when your review is due. Ask how to protect vulnerable household members if active disease is suspected.