(1) Tuberculosis is a chronic infectious disease that seriously harms people's health for a long time.

1. Tuberculosis, also known as "wasting disease", is caused by Mycobacterium tuberculosis, which mainly invades human lungs and causes tuberculosis.

2. Tuberculosis ranks second in the number of cases and deaths among Class A and Class B infectious diseases legally reported in China.

3. If tuberculosis is not found in time and not treated thoroughly, it will cause serious harm to health, even death due to respiratory failure, which will bring heavy economic burden to patients and families.

(2) Tuberculosis is mainly transmitted through respiratory tract, and everyone may be infected.

1, tuberculosis is a respiratory infectious disease, which is easy to spread.

2. TB patients spread TB bacteria into the air through coughing, expectoration and sneezing, and healthy people may be infected by inhaling droplets with TB bacteria.

3. People who live, work and study in the same room with tuberculosis patients are close contacts of tuberculosis patients. You may be infected with tuberculosis, so you should go to the hospital for examination and elimination in time.

4, HIV-infected people, immunocompromised people, diabetic patients, pneumoconiosis patients, the elderly, etc. Everyone is easy to get sick, and tuberculosis should be checked regularly every year.

Diagnostic criteria for pulmonary tuberculosis:

(1) Suspected case: anyone who meets one of the following items.

1, sputum negative pulmonary tuberculosis, chest X-ray examination suspected active pulmonary tuberculosis.

2. Negative sputum tuberculosis examination, abnormal shadow on chest X-ray examination. The patient has tuberculosis symptoms such as cough, spitting, low fever and night sweats. Or it is still not absorbed after 2-4 weeks of observation according to pneumonia treatment.

3. Children with strong positive reaction to tuberculin test (5 units, equivalent to 1: 2000) are accompanied by clinical symptoms of tuberculosis.

(2) Confirmed cases: those who meet one of the following items.

1, sputum tuberculosis positive (including smear or culture).

2. Negative sputum tuberculosis, chest X-ray examination with typical manifestations of active tuberculosis.

3. The pathological diagnosis of pulmonary lesions is tuberculosis.

4. Patients with suspected pulmonary tuberculosis can be excluded from other lung diseases through clinical X-ray follow-up.

5. Pleural effusion caused by other reasons has been ruled out clinically, which can be diagnosed as tuberculous pleurisy.