All countries should immunize their health-care workers as a first priority to protect the essential health infrastructure.
作为首要优先重点，所有国家应为其卫生保健工作者提供免疫以保障必要的卫生基础设施。
All countries should immunize their health-care workers as a first priority to protect the essential health infrastructure.
作为首要优先重点，所有国家应为其卫生保健工作者提供免疫以保障必要的卫生基础设施。
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