What are the three types of vaccines, and what are the first and second types of vaccines?

It can be divided into three main categories:1Inactivated vaccines, such as diphtheria, tetanus, tetanus.

2.live attenuated vaccines, such as live attenuated measles vaccine; 3.Genetically engineered vaccines, such as the hepatitis B vaccine.

Oral polio vaccine. These vaccines can prevent and control infectious diseases.

Vaccines can be divided into two categories, the first is the free vaccine in the national plan, this vaccine must be routinely vaccinated, in the nursery, school need to check the vaccination situation, the baby who has not completed the vaccination must be revaccinated. Class I vaccines include BCG, hepatitis B, measles, polio, diphtheria, and Japanese encephalitis vaccines. The second category is unplanned vaccines, also known as the second type of vaccines, parents can choose to be vaccinated at their own expense, this type of vaccine is as important as the first type of vaccine, but the country has not yet been able to implement free **.

It mainly includes Haemophilus influenzae vaccine, pneumonia vaccine, chickenpox vaccine, rotavirus vaccine, hand, foot and mouth disease vaccine, etc.

There are two types of vaccines, the first is provided free of charge by public institutions, and the second is the vaccine that parents choose to receive at their own expense. Free vaccinations include BCG, hepatitis B, measles, polio, diphtheria, and Japanese encephalitis vaccines. Free vaccination, parents must vaccinate their children in time according to the time, some vaccines must be vaccinated, vaccination can prevent and improve the ability of certain diseases or viruses, and can improve children's immunity.

Vaccines can be divided into three categories: freeze-dried vaccines, wet vaccines, and various adjuvant vaccines.

A type of vaccine refers to a vaccine that is provided free of charge to citizens and that citizens should receive in accordance with the provisions of the vaccine, which must be vaccinated; The second type of vaccine is other vaccines that citizens receive at their own expense and voluntarily. The division between Class I and Class II vaccines is not absolute. With the development of the economy and the improvement of medical standards, more vaccines will be included in the category of first-class vaccines.

The second type of vaccine is divided into two categories and four conditions. Some Class II vaccines are complementary to Class I vaccines, such as HiB, chickenpox, and rotavirus.

Other Class II vaccines are alternatives to Class I vaccines, including the replacement of live attenuated vaccines with inactivated vaccines, such as IPV instead of OPV; Combined vaccine instead of single vaccine, such as quintuple vaccine; Process improvement, improve purity, reduce endotoxin, formaldehyde, antibiotic residues, etc.

On March 29, 2016, the representative of the World Health Organization (WHO) Office in Beijing, Dr. Lan Sulsian, suggested that China include the following five vaccines in the immunization program: Haemophilus influenzae conjugate vaccine, inactivated polio vaccine, pneumoniae meningitis vaccine, pneumococcal pneumococcal vaccine, and rotavirus vaccine.

The first type of vaccines usually includes: hepatitis B vaccine, BCG vaccine, oral attenuated polio vaccine, diphtheria-pertussis vaccine, diphtheria-tetanus-pertussis vaccine, leprosy double vaccine, measles-mumps triple vaccine, live attenuated Japanese encephalitis vaccine, group A cerebral polysaccharide vaccine, group A + C cerebral polysaccharide vaccine, and hepatitis A live attenuated vaccine.

The second type of vaccine, the common second type of vaccines are: oral rotavirus vaccine, hepatitis A vaccine, HIB vaccine, influenza vaccine, rabies vaccine, etc.

Hello, I am a doctor of vaccination, and the second types of vaccines used in China at this stage are: Paid hepatitis B vaccine, inactivated polio vaccine, 7-valent pneumococcal vaccine, 23-valent pneumococcal vaccine, influenza vaccine, oral rotavirus vaccine, HIB vaccine, chickenpox vaccine, rabies vaccine, A type of vaccine: BCG, hepatitis B vaccine, live attenuated polio vaccine, diphtheria-pertussis vaccine, leprosy vaccine, Japanese encephalitis attenuated vaccine, measles-mumps vaccine, hepatitis A vaccine, encephalitis, encephalopathy, A+C diphtheria, tetanus

Do you know the difference between Class I vaccine and Class II vaccine?

Inactivated and attenuated vaccines. Among them, inactivated vaccines include subunit vaccines (genetically engineered vaccines), inactivated bacterial vaccines, inactivated virus vaccines, polypeptide vaccines, etc. Inactivated seedlings are safe to use and will not return to poison, but inactivated seedlings produce immunity slowly, require multiple strong immunization, and the overall effect is not as good as that of weak vaccines.

The effect of attenuated vaccine is better, and the immunity is faster and stronger, but it is easier to return to the virus, bringing disaster. For specific diseases, countries have prescribed which vaccine to use.

Generally, we divide vaccines into two categories, one type of vaccine (national immunization vaccine), which is free of charge. The second type of vaccine is voluntarily vaccinated at one's own expense.

In addition, we can also divide it into three categories: live attenuated vaccines, inactivated vaccines and genetically recombinant vaccines. Attenuated vaccines reduce their virulence after multiple generations of reproduction, and the virus or bacteria are still alive. After vaccination, it can still multiply in the human body, similar to a natural infection process.

Inactivated vaccine refers to killing bacteria or viruses, retaining the useful parts of bacteria or viruses through separation, purification and other processes, and injecting them into the human body to cause an immune response and produce antibodies. A recombinant vaccine is a vaccine that extracts the DNA of the virus, combines it with other harmless cell chromosomes, and reproduces it through the host cell.

In addition, it can also be divided into bacterial and viral vaccines according to the prevention of bacterial diseases or viral diseases.