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。
A systematic research had been done on safety of vaccine against carp dropsy, immunological protection and valence, and an oral vaccination was carried out in fishery.
对鲤鱼竖鳞病疫苗的安全性、免疫保护力和免疫效价进行了系统性的研究，并进行了口服免疫养殖应用实验。
A systematic research had been done on safety of vaccine against carp dropsy, immunological protection and valence, and an oral vaccination was carried out in fishery.
对鲤鱼竖鳞病疫苗的安全性、免疫保护力和免疫效价进行了系统性的研究，并进行了口服免疫养殖应用实验。
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