What Is Latent Tuberculosis?

Disease Overview

Latent tuberculosis infection

Disease Overview

Latent tuberculosis infection (LTBI) usually refers to the presence of Mycobacterium tuberculosis in the body (usually the lungs), but no obvious symptoms have yet appeared. Latent tuberculosis patients were positive for the Manto test, but were asymptomatic and had no tuberculosis bacteria in their sputum. In some cases, tuberculosis can persist throughout life without becoming ill.

Tuberculosis refers to the related symptoms, the corresponding results of X-ray examination, a positive Mantor test, or the detection of tuberculosis bacteria in sputum. Because tuberculosis patients, especially those with sputum detected in sputum, can exclude tubercle bacilli when coughing, sneezing, or talking, causing contact infection, so only tuberculosis patients can spread tuberculosis. Those with latent tuberculosis infection do not carry tuberculosis bacteria in their sputum and have no corresponding symptoms, so they are generally not contagious.

Diagnostic check

1. A history of TB exposure

2, clinical manifestations with or without symptoms of tuberculosis, no positive findings on physical examination.

3. Chest X-ray examination is normal

4, tuberculin test positive

5. Attention should be paid to the identification of chronic tonsils, repeated upper respiratory infections, urinary tract infections and rheumatic fever.

treatment plan

The following conditions are treated according to the prevention of resistant tuberculosis infection:

According to BCG vaccination, but the tuberculin test in the past 2 years the diameter of the induration increased by 10mm can be considered a natural infection.

The tuberculin test response was to newly establish a natural infection from negative to positive.

Infants and adolescents with strong positive response to tuberculin test.

Patients with tuberculosis test positive symptoms of early tuberculosis.

Those who have a positive tuberculin test and need glucocorticoids or other immunosuppressants for other diseases.

tuberculin test positive, new children with measles or whooping cough.

Tuberculosis test positive HIV-infected persons and children with AIDS.