The need for additional rounds of mass oral polio vaccine (OPV) immunization will be based on an ongoing evaluation of epidemiological and laboratory data.
是否有必要进行更多轮次的口服脊髓灰质炎疫苗大规模免疫接种活动，将以正在进行的流行病学和实验室数据评估情况作为根据。
Do you have an ongoing evaluation procedure and a corresponding ranking for suppliers? Is the sampling procedure linked with the ranking?
您对供应商有持续性的评估程序以及相应的评级吗？取样的程序与(供应商)评级有关联吗？
Do you have an ongoing evaluation procedure and a corresponding ranking for suppliers? Is the sampling procedure linked with the ranking?
您对供应商有持续性的评估程序以及相应的评级吗？取样的程序与(供应商)评级有关联吗？
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