The statement “quadrivalent influenza vaccine is not recommended” is false. Quadrivalent influenza vaccine belongs to the second category of vaccines, and it is recommended to be vaccinated on a voluntary basis. The national class I vaccine is mainly for the prevention of AC influenza. The quadrivalent vaccine has a wider range of prevention than the original AC vaccine. Group A and C are the most common types of AC vaccine in China, so it is possible to get Group I vaccine to achieve effective prevention. In addition, there are other groups, such as Y, W, etc. The quadrivalent vaccine can prevent A and C groups. Quadrivalent influenza vaccine can prevent influenza caused by group A, C, Y and W. Quadrivalent influenza vaccine can provide better prevention, and if the economic condition allows, and the child’s immunity is better, you can also consider receiving quadrivalent influenza vaccine. Quadrivalent influenza vaccine belongs to the second category of national vaccines and requires self-payment, so the vaccination can be done on a voluntary basis.