求翻译：国家政策方面，没有做好宏观调控工作，监控不到位，随着经济的发展，养殖业成本增加，很多养殖户偷工减料，没有做好基础防疫，免疫工作，导致今年疫病多，比如Ｈ５－６是什么意思？

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There is no national policy, do a good job of macro-control, monitoring, with the development of the economy, farming increased costs, many farmers who are not doing a good job, and Jerry based vaccination, immunization work this year, and cause disease, such as more than 5 - 6 H

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National policies, not macro-control, monitoring and control are not in place, along with economic development, aquaculture increased costs, many breeders are simply not based on prevention, immunization, causes the disease this year, such as H5-6

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