When you are tested positive for latent TB, it means you have inactive TB germs in your body. You do not have any symptoms,
your Mantoux test or IGRA test is positive and chest x-ray is normal. Being infected means you do not have tuberculosis disease.
However, you may be in danger of getting TB disease at some time in your life. Although the TB germs are inactive, they are still alive and may break down the walls, multiply and damage your lungs and or other body parts. If you take preventive medicine, the
germs will be killed. Usually isoniazid is prescribed daily for six months, alternatively rifampicin is given for 4 months.
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