河北省是肾综合征出血热（ＨＦＲＳ）疫区，由于连年开展灭鼠工作，将鼠密度一直控制在不足为害水平，使ＨＦＲＳ发病率逐年下降，但１９９８年ＨＦＲＳ发病率有了较大回升。为此，进行了调查分析。１调查方法与达标标准鼠密度调查采用目测鼠迹法，同时听取汇报、查阅资料... Hebei Province is the epidemic area of ​​hemorrhagic fever with renal syndrome (HFRS). Since rodent control work has been carried out in successive years, the incidence of HFRS has been decreasing year by year due to the fact that the density of rats has been kept at an insufficient level. However, the incidence of HFRS has been greatly recovered in 1998. To this end, conducted a survey analysis. 1 survey methods and standards of standard rat density survey using visual mouse method, while listening to reports, access to information ...