Legal basis: Article 41 of the People's Republic of China (PRC) Vaccine Management Law stipulates that the health authorities in the State Council shall formulate a national immunization plan; The types of vaccines under the National Immunization Program shall be drawn up by the competent health department of the State Council in conjunction with the financial department of the State Council, and published after being approved by the State Council. The health authorities in the State Council set up an expert advisory committee of the National Immunization Program, and established a dynamic adjustment mechanism for vaccine types of the National Immunization Program in conjunction with the financial department of the State Council.