由于当前的季节性流感疫苗不包含大流行性流感病毒，人们应针对大流行性流感和季节性流感两者接种疫苗。
Since current seasonal influenza vaccines do not contain the pandemic virus, people should be vaccinated against both pandemic influenza and seasonal influenza.
然而，如果您需要支持多个存储或多种语言，您可以只针对其中一个使用缺省值，而不针对所有的存储和语言。
However, if you need to support multiple stores or multiple languages, then you can only use the default value for one, but not for all the stores and languages.
没有针对头部和有效负荷元数据元素添加事件对象定义，因为它们不包含实现该场景所需的任何数据。
Event object definitions were not added for the header and payload metadata elements because they do not contain any data required to implement this scenario.
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