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冷链系统是开展计划免疫工作不可缺少的保障 ,各级疾病预防控制机构在冷链系统的管理、运转方面都在不断摸索管理经验 ,为了掌握冷链系统的管理现状 ,各地虽然对冷链系统的运转情况都做了相应的调查。但每次调查所反映的情况只能是横断面的情况 ,不能掌握两次调查间隔内以及每
The cold chain system is an indispensable guarantee for carrying out the planned immunization work. The disease prevention and control institutions at all levels are constantly exploring the management experience in the management and operation of the cold chain system. In order to grasp the management status of the cold chain system, The operation of the situation have done a corresponding investigation. However, the circumstances reflected in each survey can only be cross-sectional situation, can not grasp the survey interval and each