After a baby is born, the first vaccine, BCG (Bacille Calmette-Guérin), should be administered within 24 hours. BCG is a vaccine that can prevent tuberculosis and some large-scale outbreaks of infectious diseases. After receiving the BCG vaccination, a pustule will appear at the injection site, which will gradually fall off and leave a scar, commonly known as the "vaccine scar". Since BCG is of great significance, parents must take it seriously and vaccinate their children with BCG in time.

What is BCG?

1. For normally born children, routine vaccination is generally required. Vaccination is of great significance for preventing corresponding diseases and avoiding large-scale outbreaks of infectious diseases. Within 24 hours of birth, BCG and the first dose of hepatitis B vaccine are required.

2. The main function of BCG is to prevent tuberculosis. After receiving the BCG vaccination, a local pustule will usually form at the injection site, which will gradually fall off and leave a scar, commonly known as the "vaccine scar". BCG is of great significance for preventing tuberculosis. Therefore, if there are no abnormalities after the birth of a child, routine BCG vaccination should be considered.

How to Inject BCG?

BCG is a live bacterial vaccine that is a attenuated and non-virulent strain of bovine tuberculosis, but it still retains antigenicity and the ability to continue to multiply. It is the only vaccine used to prevent tuberculosis. Immunity is produced 4 to 8 weeks after vaccination, and a positive tuberculin test 2 to 3 months later indicates successful vaccination. Immunity generally lasts for 3 to 4 years.

The inoculation method is to inject 0.1 milliliters of BCG into the outer layer of the deltoid muscle of the left upper arm using intradermal injection. Subcutaneous and intramuscular injection are strictly prohibited. When BCG is administered with other vaccines, they should be injected on different sides.

The Role of BCG

BCG is an attenuated live bacterial vaccine used to prevent the occurrence of tuberculosis. Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis infection. Mycobacterium tuberculosis can invade various organs of the human body, but mainly invades the lungs, known as tuberculosis. Tuberculosis, also known as consumption and "white plague", is an ancient infectious disease that has existed since the beginning of human history. Tuberculous meningitis is an extrapulmonary tuberculosis caused by non-suppurative inflammation of the meninges caused by Mycobacterium tuberculosis, which often occurs secondary to miliary tuberculosis or tuberculous lesions in other organs. Vaccination with BCG for babies has a significant effect on preventing tuberculosis.