A mass vaccination campaign is being prepared in both countries to protect the population at risk and to prevent the spread of the disease to densely populated urban Settings.
这两个国家都在准备开展大规模预防接种运动以保护危险人口和防止该病向人口密集的城市住区蔓延。
A mass vaccination campaign is being prepared in both countries to protect the population at risk and to prevent the spread of the disease to densely populated urban Settings.
这两个国家都在准备开展大规模预防接种运动以保护危险人口和防止该病向人口密集的城市住区蔓延。
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