1、Spread by water: in the spread of cholera, water plays the most prominent role, the source of water are easily contaminated by dirt patients vomit and diarrhea, people easily to be infected could be infected directly by the raw water, and also could be infected through the food, and tableware pollution.

    2、Spread by food: vibrio cholera in food could survival for 1-2 weeks or longer, and could breed if the conditions appropriate, thus, food contaminated could leads to i food type outbreak and epidemic.

    3、Spread by daily contact: Cholera could also be spread by contacting with contaminated items and disseminate, particularly the hand infection, and infected by contacting more happens in the condition of intensive and poor sanitation.

    4、Spread by flies: flies are active in summer and autumn, and will easy take the virus onto the food, play a certain role in its spread.