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2011年7月14日，北京大学人口研究所郑晓瑛研究团队的研究成果《Twenty-year trends in the prevalence of disability in China》在线发表在 《世界卫生组织公报》（Bulletin of the World Health Organization）。这是联合国《世界卫生组织公报》首次发表中国残疾研究重大成果。
World Health Organization raises pandemic level
World Health Organization pandemic level H1N1
2009/6/15
The World Health Organization has declared a stage six pandemic, raising its pandemic level from stage five. The organization raised its level to stage six to reflect widespread worldwide cases of the...