Every child is born with vaccinations, and almost every month until the age of 2, children need to be vaccinated. Since there are many types of vaccines, both free and self-funded, parents are often at a loss: which vaccines must be given and which ones can be considered at their discretion? Type I vaccines (scheduled vaccines, free of charge) are vaccines that the government provides free of charge to citizens and that citizens should receive in accordance with government regulations. Since 2008, this vaccine has been replaced by the cell-free diphtheria vaccine, and seven other vaccines have been added, including group A flu vaccine, group A+C flu vaccine, leprosy vaccine, mumps vaccine, mumps vaccine, hepatitis A vaccine, and brain B vaccine. Type I vaccines prevent diseases that are highly contagious and dangerous and can be easily contracted by children, therefore, parents should give all vaccinations to their babies in a timely manner as required by the vaccination procedures (except for those with contraindications). Type II vaccines (unscheduled vaccines, self-funded) were also called unscheduled vaccines, which are self-funded and voluntary. 1. Hib vaccine: It is used to prevent invasive diseases caused by Haemophilus influenzae type b (Hib), such as meningitis, pneumonia, sepsis, etc. It is mostly seen in infants and children under 3 years old. The Hib vaccine is expensive and is recommended for infants and children between the ages of 2 and 17 months. 2. 23-valent pneumococcal polysaccharide vaccine: Prevents 23 serotypes of pneumococcal infections. Pneumococcal infections are a common cause of pneumonia, meningitis, and otitis media. The vaccine is indicated for children and adults over 2 years of age who have various chronic diseases or are frail. Available information indicates that protective antibodies last for at least 5 years with a single vaccination. It should not be given to children under 2 years of age. Vaccination can be considered for children who are frail and sickly, but is generally not necessary for healthy children. 3. 7-valent pneumococcal conjugate vaccine (pediatric pneumonia vaccine): The diseases prevented are the same as those prevented by 23-valent pneumonia vaccine, but this vaccine is used for infants and children aged 3 months to 2 years and for children aged 2 to 5 years who have not received this vaccine. Routine vaccination procedures: primary immunization at 3, 4 and 5 months of age, booster immunization at 12-15 months of age. The vaccine costs more than$800 for one shot and more than$3,000 for the full vaccination. If you are a little sensitive to this price and a little hesitant, it is okay not to vaccinate, even if the child is unfortunately infected, the current antibiotics can quickly control the disease. 4.Influenza vaccine: It is used to prevent influenza (flu) or to reduce the symptoms of flu. It is suitable for children and adults over 6 months of age. Especially recommended for kindergarten and primary and secondary school students, for elderly people aged 65 and above, patients with chronic lung disease and diabetes and those with low immune function, long-term aspirin treatment, military personnel, teachers, medical workers and other key populations. One vaccination per year. Vaccination is prohibited for people with severe allergy to eggs. 5.Rotary virus vaccine: prevent infant and child diarrhea caused by rotavirus (also known as autumn diarrhea). the main cause of diarrhea in children under 5 years old is viral infection, of which rotavirus is the most important, accounting for more than 60%. patients aged 2 months to 3 years are most common. The vaccine is an oral vaccine and is given once a year to children under 3 years of age. The preventive effect is general, mainly to reduce diarrhea and reduce the incidence of severe diarrhea. 6. Live attenuated varicella vaccine: It prevents varicella-zoster virus (VZV) infection, which is manifested as chickenpox when VZV first infects the human body and leads to herpes zoster when the latent virus is re-infected. It is indicated for healthy children over 24 months of age, adolescents and adults (especially women of childbearing age who are not immune), high-risk groups and their close contacts. Varicella is highly contagious and in a few cases can cause heart and brain complications, so vaccination is strongly recommended.