【2017年整理】第二节 传染病的预防.ppt

认识病毒 讨论： 四、分析血吸虫的生活史 模拟传染病的传播 超链接——数学 讨 论： 传染源：是指能够散播病原体的人或动物。 传染病流行的三个基本条件（环节） 传染源 传播途径 易感人群 连一连如何预防传染病 控制传染源 切断传播途径 保护易感人群 讨论 下列哪些行为能传染艾滋病？ Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. * 第二节 传染病的预防 泗阳县育才双语学校 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 传染病 由病原体引起的,能够在人与人之间或人与动物之间传播的疾病. 特点：传染性 流行性 病原体：病毒、细菌、真菌、寄生虫 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 真菌 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 1.血吸虫虫卵是如何从人体排出进入水域的? 2.血吸虫由虫卵发育至成虫主要经过哪两个阶段? 3.血吸虫的中间宿主是谁? 毛蚴 尾蚴 钉螺 消化系统 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 血吸虫寄生在人体内 受精卵 随粪便排入水中 发育成毛蚴 钻入钉螺体内发育 尾蚴 通过皮肤或黏膜钻 入体内 Evaluation only. Created with Aspose.Slides for .NET 3.5 Client Profile 5.2.0.0. Copyright 2004-2011 Aspose Pty Ltd. 血吸虫一旦通过人体皮肤进入体内，便开始迅速繁殖，其虫卵会顺着血管进入肝脏，使肝脏纤维化，再使脾脏增大，造成腹水。 血吸虫病的危害 Evaluation