Microeconomic

The vaccine is not only a commodity but also a special kind of medical supplies. Therefore, vaccine production and sales can not only be adjusted by the market, the government's intervention is also important. Three methods are recommended to use after the vaccine scandal.

The first method is set up a disease control system to supervise and track vaccines by labeled bar code. Then verify the effectiveness of the vaccine by the method of a sample survey. Labels of vaccine records manufacturers, production batch and production date which is useful for medical institutions to manage the vaccine. Once the medical accident appears, the causes can be known as early as possible. This method can eliminate the overdue vaccine from the source so as to achieve the effect of prevention.

It can not be denied that the third-party supervision and management needs high administrative cost and testing equipment cost. These expenses are inevitable and continuity. However, expanding the number of non-profit vaccine regulators and levy tax on the wholesalers through a legal way are useful to cover part of the financial burden. For example，government can co-operate with mass media to disclose the disposal results of vaccine scandal during each process. Emphasis on the role of public opinion supervision(重视舆论监督). Then the amounts of tax can be defined as the main source for the people who get hurt from the problem vaccine especially. The tax also can be used as wages for supervisor and as asset acquisition costs.

Furthermore, mental compensation can’t be ignored. The fully medical test is needed. In addition，Production and use of overdue vaccines has a great profit. So government needs to increase the penalties for overdue vaccine and punished officials who involved in the illegal sale of expired vaccine cases. This method clearly demonstrated high penalties of vaccine scandal to the public. In other words, the cost