Phase I Clinical Protocol of BCG-PPD in Healthy People

Inclusion Criteria: 1. Age 0-65 (including 65 years old), male and female. 2. I (and/or my guardian) agree to participate in the study and sign the informed consent. 3. I (and/or guardian) can comply with the requirements of the clinical trial protocol to participate in the follow-up. 4. No history of tuberculosis, family history of tuberculosis, and history of close contact with tuberculosis (refers to direct contact with registered tuberculosis patients from 3 months before their diagnosis to 14 days after the start of anti-tuberculosis treatment). 5. No pulmonary or external tuberculosis, and no respiratory symptoms or other systemic symptoms of tuberculosis. 6. Medical history of careless, liver, kidney, digestive tract, nervous system, mental and metabolic abnormalities after signing the informed consent. 7. Vital signs (body temperature (axillary temperature) \< 37.3℃, blood pressure (people aged 18 and over: systolic blood pressure \< 140mmHg, diastolic blood pressure \< 90mmHg);People aged 6 to 17: systolic blood pressure \< 120mmHg, diastolic blood pressure \< 80mmHg;No abnormal blood pressure, pulse rate 50 \~ 100 times /min, electrocardiogram, physical examination or abnormality has no clinical significance. 8. Laboratory tests, including blood routine, urine routine and blood biochemical tests, showed no abnormalities or abnormalities had no clinical significance. Exclusion Criteria: 1. Patients with acute infectious diseases (such as measles, pertussis, influenza, pneumonia, etc.), acute ophthalmic membranitis, acute otitis media, generalized skin diseases and allergic constitution (people with allergy history to two or more drugs or foods, or known allergy and scar constitution to this drug component) 2. Subjects have any serious disease, such as: tumor, progressive atherosclerosis or diabetes with complications, chronic obstructive pulmonary disease requiring oxygen therapy, acute or progressive liver or kidney disease, congestive heart failure, etc. 3. A history of convulsion, epilepsy, mental illness and/or a family history of mental illness. 4. is known or suspected (or has a high risk might) damage or abnormal immune function, such as immune inhibitors or immune enhancer treatment, in 3 months to accept glucocorticoid, outside of the gastrointestinal tract immunoglobulin preparations or blood products or plasma extract, human immunodeficiency virus infection or related diseases. 5. The test results of human immunodeficiency virus (HIV) antibody are positive 6. Before enrollment, the interval between inoculation of live attenuated vaccine is less than 28 days, and the interval between inoculation of other vaccines is less than 14 days 7. In the acute stage of disease or acute onset of chronic disease (3 days before skin test) 8. Is participating in or has participated in any other clinical investigator within 3 months prior to this clinical study 9. pregnant or lactating women, or planning to become pregnant during the study period. 10. On-site inquiry for drug abuse and alcohol abuse. 11. Persons with upper extremity disabilities 12. Birth weight less than 2.5kg, or premature and difficult birth (for infants under one year of age) 13. Newborn with respiratory distress syndrome, pathological jaundice, congenital malformations, developmental disorders and congenital diseases (for infants under 1 year of age) 14. The investigator believes that there are any conditions such as poor compliance that may affect the evaluation of the trial.