·2,447,543篇论文数据，部分数据来源于NoteExpress
请尽可能对保护区的法律执行和保护效力做出评估。
An assessment of the enforcement of legislation and effectiveness of any protected areas should be given whenever possible.
由于保护效力较低，且严重不良反应的发生率较高，因此世卫组织从未建议使用注射用霍乱疫苗。
The use of the parenteral cholera vaccine has never been recommended by WHO due to its low protective efficacy and the high occurrence of severe adverse reactions.
世卫组织从未建议使用注射用霍乱疫苗，因为这种疫苗的保护效力低下，严重不良反应的发生率较高。
The use of the parenteral cholera vaccine has never been recommended by WHO due to its low protective efficacy and the occurrence of severe adverse events.
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