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1流行病学调查基本情况1.1流行病疫情状况自2003年开始,郑州市沿黄渔区偶尔发生集约化养鲤池塘批量死鲤现象,2004~2006年,该疫情持续发生,呈逐年快速递升之势。2007~2009年,形成疫区,而且重灾区危害严重,损失巨大。2010~2013年,该疫病使疫区渔农损失惨重,而且蔓延至整个河南沿黄渔区和全省池塘、网箱养鲤密集区,年经济损失
1 Basic information of epidemiological survey 1.1 Status of epidemic situation Since 2003, batch carp died intensive intensive carp pond along the Yellow River fishing area of Zhengzhou City. From 2004 to 2006, the epidemic continued to rise rapidly year by year Potential. From 2007 to 2009, the epidemic area was formed, and the severely harvested area was seriously endangered with huge losses. From 2010 to 2013, the epidemic caused heavy losses to farmers and peasants in the epidemic area and spread to the entire Yellow River fishing area in Henan Province and the ponds in the whole province.