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Media disclosed early have exposed vaccine event, existing vaccines in the process of shipment according to the request of refrigerated no transportation. The vaccine cold chain transport chain scission, resulting in vaccine failure.

To this, the ministry of health, state food and drug administration recently jointly issued the notice, to organize vaccination work throughout the country, stepping up efforts in supervising the vaccine production and wholesale enterprises, strengthen circulation and of the vaccine cold chain operation management, guarantee the vaccine storage, transportation in cold chain.

Biological vaccine is sensitive to temperature

Among various kinds of medicine, national regulation of vaccines and other biological products is most strictly. Vaccine is a special medicines, in the transportation, storage and other links have strict frozen insulation requirements. Vaccine is sensitive to temperature, the temperature is too high or too low is likely to affect the quality of the vaccine.

Because the vaccine is sensitive to temperature, vaccine from manufacturing to use the site, each link may fail due to temperature does not conform to specified requirements. According to expert introduction, Chinese medicine entrepreneurs association many vaccine in excess of the prescribed temperature namely failure. In the process of storage and transportation, once the temperature is beyond 2 ℃ ~ 8 ℃, the vaccine will be destroyed.

Because of the particularity of the vaccine, so the high demand for storage and transportation conditions, the distribution storage must be under the appropriate temperature, a complete cold chain can't disconnect. If there is a deviation will lead to degeneration of vaccine, the failure, can't play a proper role.