In the event of skyrocketing mosquito density or occurrence of JE epidemic, pesticides should be scientifically distributed and chemical control approaches intensified.
当三带喙库蚊密度高或有乙脑疫情时，应加强化学防治，做到科学合理用药。
Objective to study the influence of the rodent density to the incidence of leptospirosis, and work out the methods to prevent and control the leptospirosis epidemic.
目的研究鼠类种群数量变动对钩端螺旋体病(简称钩体病)流行的影响，以便制定控制钩体病流行的对策。
If the local rat density is more than 10%, there will may be a epidemic of leptospirosis.
鼠密度(夹夜法)达10%以上即可能造成钩体病流行。
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