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日照市为钩端螺旋体病的疫源地，７０年代初曾发生大流行。猪是主要的传染源。自７０年以后，实行管猪改圈，圈养更新的综合性防制措施效果显著，发病率由１９７０年的１０４．１９／万，降至１９８２的的０．１４／万，且自１９８２年以后未再有疫情报告。
Rizhao City is the source of leptospirosis and a pandemic occurred in the early 1970s. Pig is the main source of infection. Since 1970, the comprehensive prevention and control measures for pigs changing to pigsty and keeping captive have achieved remarkable results. The incidence rate dropped from 104.19 / million in 1970 to 0.14 / 10,000 in 1982, and since 1982 No further epidemic report.