Children often need to be vaccinated, how does the vaccine work?

The vaccine is infused into the body to improve immunity and fight some harmful viruses. As long as the immunity is strong, the body will fight off a lot of viruses.

Artificial autoimmunization is to inoculate attenuated, non-toxic or inactivated pathogens, so that some cells in the immune system recognize specific molecules in the pathogen (these specific molecules are called antigens) and record them, and the next time they encounter the pathogen, they can quickly produce antibodies, these antibodies are proteins, which can bind to antigens, activate the killing power of the immune system, and eliminate pathogens. Attenuated or non-virulent vaccines have the advantage of multiplying in the body, fully mobilizing a third line of defense, and remaining for a long time in small doses.

After vaccination, the body will automatically destroy this antibody when it encounters it again.

Pathogens invade our body by binding to a substance called a receptor on the surface of human cells, making us sick.

After vaccination, the human body will cause an immune response, producing memory T cells and memory B cells; When the body is exposed to the same antigen again, these two cells proliferate and differentiate rapidly, producing effector T cells and effector B cells (plasma cells) that rapidly clear the antigen, and plasma cells produce antibodies. Antibody and antigen binding. Effector T cells are in close contact with target cells, causing target cells to lyse and die.

Vaccines are made with pathogenic bacteria or parts of pathogenic bacteria that have been detoxified or inactivated. After vaccination, it will simulate the infection process of the pathogen in the body, but it will not actually get sick, so that the body will produce antibodies against the pathogen. When the real pathogen comes to attack, it is because the antibodies have already been produced, so it will not get sick.

The vaccine is transmitted throughout the body through the bloodstream.

Pathogens cause disease in the human body by binding to a substance called a receptor on the surface of human cells.

Disease analysis: Hello, there are domestic and imported epidemic prevention shots, and the general basic health care vaccines are free, and some vaccines are charged.

Suggestions:

After the injection, you must take care of the baby, if the baby becomes quiet, you must go to the doctor, and do not give the baby medicine yourself.

It should be 18 months before going to get vaccinated, and there should be an appointment date on the baby's vaccination book, and it should be played according to the appointment on the vaccination book.

Vaccination should be postponed in the early stages of cold and fever, in the early stages of acute illness in citrus, in immunosuppressants**, recent use of blood products, acute asthma attacks or eczema outbreaks, and premature infants.

When your child has a cold or other physical discomfort, you should not be vaccinated casually.

The child is sick and uncomfortable, even if it has a runny nose and a cold, and it is not suitable for the baby to take other medicines.

Because everyone's physique is different, the severity of the reaction to vaccination is also different, so in order to reduce the vaccination reaction, we should understand the child's physique before vaccinating the child, if the child has a history of allergies, epilepsy and other diseases, it is not allowed to be vaccinated, otherwise it may make the child's condition worsen and bring more terrible harm.

1.Suffering from atopic dermatitis. Viral ** diseases. Children with more severe** eczema are not suitable for vaccination, and vaccination can not be carried out until they are cured;

2.Children with body temperature over and under the armpit or lymphoma are not suitable for vaccination, and the cause of the disease should be found out before vaccination;

3.Suffering from a more serious heart. Liver. Children with renal disease and active content tuberculosis are not suitable for vaccination;

4.The central nervous system refers to abnormal brain growth and development, with sequelae of encephalitis. Children with epilepsy are not suitable for vaccination;

5.Children with congenital immunodeficiency are not suitable for vaccination;

6.Children with high allergies should be cautious when being vaccinated, and it is recommended to carry out allergen testing, and whether they can be vaccinated should be carried out according to the doctor's instructions;

7.Children with diarrhea should wait two weeks before taking polio vaccine.

8.Children who have recently been injected with flagellated antigen human immunoglobulin should not be vaccinated against measles within 6 weeks;

9.Fever and cold. Minor low-grade fever and other general illnesses can be postponed depending on the situation;

10.Vaccination is not suitable when starving on an empty stomach.

What children are not suitable for vaccination, parents are clear, after vaccination, parents do not have to let the child leave immediately, to half an hour later, see the child is not reflected in the vaccination before leaving, in order to better consider the physical and mental health of the child, parents should have patience and self-confidence, looking forward to the development of children's physical and mental health.

Children who are underweight, children who do not meet the standards for growth and development, children who are in the onset period, children with congenital diseases, and children with infectious diseases.

People with severe heart, liver, and kidney diseases, people with abnormal nervous system development, some children with weather immunity deficiency, and people with dermatitis are not suitable for vaccination.

Those who are not in good health, have poor digestion, have serious diseases, are allergic to vaccine injections, and have high blood pressure, these children are not suitable for vaccination.

Children who are in the onset period, children with congenital diseases, children who are underweight, children with undergrowth, children with brain diseases.