Latent Tuberculosis

Latent Tuberculosis – What is TB infection (latent)?
A small percentage of people living near the person with TB disease (active) inhale these droplets in the air, and then become with the TB infection in a latent form. Only 10% of people infected with TB will develop the active disease (active) in the course of their lives.
People carry the TB infection (latent) are not contagious and have no symptoms. They are not dangerous to themselves or to others because they are not sick and are not contagious. A preventive treatment that can significantly reduce the risk of latent infection develops disease.

What is TB disease TB (active)?
People with TB disease (active) are potentially contagious and can spread while talking, coughing or sneezing infectious bacilli that spread in the air, in the form of droplets. Note that only individuals pulmonary tuberculosis are considered contagious. When infected, the bacterium multiplies within the body to eventually give the classic symptoms of TB.

What is the treatment of TB infection (latent)?
The person with TB infection (latent) received prophylactic treatment said to prevent the development of disease. The isoniazid (INH) is the preferred drug, it must be taken daily for a period of 6 to 12 months. Preventive treatment is to kill microbes imprisoned not yet deteriorating health but could release a few years later and become active. Tuberculosis is a treatable and curable disease if the patient follows a methodical advice given by the team of health professionals. Note, the Montreal Chest Institute is a health specialist in respiratory health including tuberculosis.

What are the people at risk of being infected?
Anyone with prolonged contact with someone with TB disease (active) contact is at risk of being infected with the TB bacillus. If infected, people with HIV / AIDS are at higher risk of developing TB disease ( active) . Those living in disadvantaged areas with poor sanitation are also more vulnerable to disease.


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