What is BCG preventing? What does BCG prevent?

BCG is a vaccine used to prevent tuberculosis in children. Vaccination can give children a special resistance to tuberculosis. Since this vaccine was invented by two French scholars, Carmel and Chaelan, in honor of the inventor, the vaccine to prevent tuberculosis was named "BCG".

At present, most countries in the world have listed BCG as one of the vaccines that must be vaccinated for immunization. BCG vaccination is mainly given to newborn infants and young children, and it can prevent the development of tuberculosis in children, especially those severe types of tuberculosis, such as tuberculous meningitis. BCG vaccination is good for the healthy development of children.

BCG vaccination is called the "first shot at birth", so newborn babies should be vaccinated at birth in maternity hospitals and obstetric departments. If you are not vaccinated in time at birth, you must go to the BCG clinic of the local tuberculosis administration or the immunization clinic of the health and epidemic prevention station to catch up on the vaccination before the age of 1. Children should prevent tuberculosis and plant BCG quickly.

BCG is a vaccine for the prevention of tuberculosis in children, which is given to newborns and children with a negative tuberculin test, and can prevent the development of tuberculosis in children, especially various severe types of tuberculosis, such as tuberculous meningitis.

BCG injections in children are used to prevent tuberculosis. But now there are also medicinal BCG that is an immunomodulator, and the ingredient is BCG ribose, which is used to regulate immunity and treat immune system diseases such as hepatitis ** disease.

BCG is used to prevent tuberculosis and has antibodies that can resist the invasion of tuberculosis bacilli and prevent tuberculosis.

Pay attention to timely injection for immunization, and if the child is born in the hospital, pay attention to blood sampling to check whether there are antibodies.

Now, with the development of medical technology, parents are required to do a good job in disease prevention for their children, in other words, to take their children to the hospital for disease prevention vaccination within the specified time. Today I will introduce you to BCG, and it is necessary to understand the relevant knowledge of this vaccine before vaccination, such as what BCG vaccine is used to prevent diseases.

1. What is BCG

BCG is a vaccine used to prevent tuberculosis and is made from live, non-virulent Mycobacterium bovis that can develop immunity to the human type of Mycobacterium tuberculosis. More than 90 percent of the recipients will form ulcers locally after vaccination, and after a few weeks or half a year, they will heal and form scars. After BCG vaccination, it can effectively prevent tuberculous meningitis and hematogenous disseminated tuberculosis.

2. The time of receiving the source species

For the BCG vaccination time, experts said that the BCG vaccination time is determined according to the health status of the baby at birth, if the baby is full-term delivery, the weight is above, can be vaccinated after 24 hours after birth, and the vaccination can be completed within 12 months at the latest. If the baby is born prematurely, it is best to give birth after 6 months of birth. If you have exceeded your weight within six months, you can be vaccinated with BCG if you meet the developmental indicators through a doctor's examination.

3. Precautions for vaccination

First of all, we must know that after receiving BCG, it is not possible to produce antibodies immediately, it takes a certain amount of time, and it should be about two months normally. Vaccinated children will have thick foam at the vaccination site, and they can not scratch it with their hands at this time, so they can apply some ointment. Wait for it to slowly break and scab over on its own, and when the scab falls off, a round scar will appear, which is when the body is telling you that BCG vaccination has been successful.

In addition, we need to pay attention not only not to scratch the bubble with our hands after BCG vaccination, but also to wash the wound around the wound in time every day to prevent serious infection. If there are some special circumstances, such as a child's general fever or other symptoms, it must be sent to the hospital for examination in time, so as not to lead to serious consequences due to delay. Vaccination BCG is to prevent us from getting tuberculosis in the future and to prepare in advance, to know whether the vaccine is successful is not only to see if there is a round scar on the arm, but also to carry out scientific certification in about two months to three months, so that it is an effective way to confirm whether the vaccination is successful.

Nowadays, many babies are required to get a variety of vaccinations after birth, some of which are free of charge and some are self-paying. Vaccines are one of the effective ways to prevent and control infectious diseases. At present, the vaccines that must be vaccinated in China are a type of vaccine, and the cost is provided by the state, including BCG.

Did you know that BCG is a prevention?

What does BCG prevent?

The BCG vaccine can prevent tuberculosis in children. After BCG vaccination, it can help the body produce antibodies against binding, which is a vaccine that must be vaccinated by the state for newborns, and is also within the scope of planned immunization. After vaccination, babies will develop specific antibodies to tuberculosis, which has special resistance.

In general, the vaccination is given within 24 hours of birth, but if the vaccination is not due to some conditions, it is recommended to give the child a catch-up vaccination within 2 months.

BCG was first developed by the French scientist Calmette-Carlette. Mainly for babies who have just been born for less than 24 hours, BCG vaccination is of great help to the growth and development of the baby. In the prevention of tuberculosis, especially the severe type of tuberculosis that can endanger the life and health of children, it plays a great role in prevention.

Attention should be paid to BCG vaccination:

1. Premature and dystocia babies cannot be vaccinated with BCG.

2. Babies with acute infectious diseases such as fever, vomiting and diarrhea cannot be vaccinated.

3. Babies who are suspected of having tuberculosis should first do a tuberculin test to determine whether they have tuberculosis.

4. Newborn infants weighing less than 2500 grams cannot be vaccinated with BCG.

5. Those who have allergic reactions to vaccination or have certain chronic diseases, ** diseases, and neurological diseases should communicate with their doctors before choosing whether to receive BCG vaccines.

As soon as many newborns are born, the hospital will give them a booklet that records the time of vaccination at each stage. So, what does BCG prevent? When is BCG shot?

What is BCG preventing?

BCG is a vaccine used to prevent tuberculosis in children. Vaccination can give children a special resistance to tuberculosis. Since this vaccine was invented by two French scholars, Carmel and Chaelan, in honor of the inventor, the vaccine to prevent tuberculosis was named "BCG".

Immunity to Mycobacterium tuberculosis is developed after inoculation with the human body by causing a mild infection. More than 90% of the recipients will form ulcers at the site of inoculation for several weeks to six months, and finally heal to form scars, commonly known as stuck scars. Mycobacterium bovis loses its pathogenicity to humans after several years of passage on a special artificial medium, but still maintains a high enough immunogenicity to become a vaccine that can prevent tuberculosis to a certain extent, and is effective in preventing tuberculous meningitis and hematogenous disseminated tuberculosis.

When is BCG shot?

According to the national literature report, BCG vaccination is generally given within 24 hours after your baby is born. The rate of tuberculin test positivity after vaccination is usually lower than that after the first few months of life. However, if you are vaccinated too long after birth, you are worried that you will be infected with toxic tuberculosis bacteria for such a long time.

In cases where infection** is common or if you have a TB patient in your household, the sooner you get vaccinated, the better. On the contrary, the baby has little chance of contact with outsiders before the full month, that is, there is little chance of being infected by tuberculosis bacteria.

The Ministry of Health of China stipulates that babies who have not been vaccinated with BCG can be directly vaccinated if they are less than 3 months old; If between 3 months and 3 years of age, a tuberculin (PPD) test should be performed, and the result is negative, you can be revaccinated; Babies aged 4 years and over will not be vaccinated.

BCG recheck timeNo matter when your baby was vaccinated with BCG, you should take him to a designated health and epidemic prevention institution after 3 months to check the effect of BCG vaccination to ensure that BCG has been planted, that is, to carry out BCG recheck.

How long can BCG be delayed.

If the baby has no special circumstances, such as a cold and runny nose, etc., it can be vaccinated normally.

It doesn't matter how long it is delayed, it must be made up, and you need to make up for what you miss, and you should go to the health defense center to get vaccinated, and many hospitals are not responsible for vaccination. You can take your baby to the health and epidemic prevention center near where you live.

BCG is not permanent, and the stool does not need to pay attention to this, so what is BCG preventing, and how long is it effective?

BCG is a normal newborn according to the national vaccination schedule, and it belongs to the category of vaccines that are free of charge, and it is mainly used to prevent infection with Mycobacterium tuberculosis. The protective effect of BCG is mainly completed by inducing a cell-mediated immune response, the initial jujube infection is formed after inoculation with BCG, and the antigen information is transmitted to immunoactive cells through macrophage processing, so that T cells differentiate and proliferate, forming sensitized lymphocytes, and when the body is reinfected with Mycobacterium tuberculosis, macrophages and sensitized lymphocytes are activated, causing specific immune responses.

Generally, immunity is produced four to eight weeks after BCG vaccination, and immunity can generally last for more than three years, BCG vaccination can prevent tuberculosis bacillus infection, and studies have reported that BCG vaccination can prevent 50% of tuberculosis.

1. BCG is a vaccine used to prevent tuberculosis, which is made of live non-toxic bovine Mycobacterium tuberculosis, which produces immunity to human Mycobacterium tuberculosis by causing slight infection after inoculating the human body. More than 90% of recipients will develop ulcers during the inoculation process, which will last for several weeks to six months, and finally heal to form scars, commonly known as stuck scars.

2. Mycobacterium bovis bovis has lost its pathogenicity to humans after several years of passage on a special artificial medium, but it still maintains a high enough immunogenicity to become a vaccine that can prevent tuberculosis to a certain extent, and is effective in preventing tuberculous meningitis and blood group disseminated tuberculosis. Lymphadenopathy such as above and below the clavicle, if the reaction is too strong, the lymph nodes are swollen obviously, abscess or ulceration can be formed, or there are small pus pockets at the inoculation site, and the reaction of intradermal injection is often stronger than that of the scratch method, in addition, the tuberculin test is positive, and the reaction can also be strong after vaccination. 3. Lupus reaction is related to the remaining independence of tuberculosis strains.

4. Scars, due to the formation of rich granulation tissue scar protrusion, sometimes as keloids, more common in people who do not do OT test, but directly scratch the skin inoculation.