How is tuberculosis prevented?
This is partly true, and partly false. Having been exposed to tuberculosis and having inhaled tuberculosis germs, one can prevent tuberculosis; meaning tuberculosis disease, or TB by taking preventive medicine, primarily isoniazid or INH supplemented by vitamin B6. The course of treatment is typically 6 months. As the previous person commented, if you never get exposed to TB in the first place, there would be nothing to prevent. Persons that breathe in TB germs and do not have active tuberculosis disease have latent tuberculosis infection, or LTBI. The preventive meds, or INH would be prescribed to persons with LTBI in order to prevent them from developing tuberculosis disease, or TB.