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一、霍亂流行的條件構成霍亂的流行,有它的必要條件,這些條件,就是:(1)霍亂病菌;(2)霍亂病人或霍亂帶菌者;(3)水、食物或蒼蠅等傳染媒介。其中任何一項或二項條件的缺少,不能發生疫
First, the prevalence of cholera constitutes a prevalent cholera epidemic. Its conditions are as follows: (1) cholera bacteria; (2) cholera patients or cholera carriers; and (3) vectors such as water, food or flies. Any one or two of the conditions of the lack of epidemic