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1984年8月起,海南岛西南沿海发生流行性缩阳症,历时八月余,波及八县市。 1987年7～8月间万宁县和乐、乐来及后安镇又发生一次缩阳症流行。为了探讨缩阳症
Since August 1984, an epidemic of yin-yang disease has taken place along the southwest coast of Hainan Island. It lasted more than eight months and affected eight counties and cities. 1987 7 ~ August Wanning County and music, music and after the town had another episode of depression. In order to explore the contraction Yang