随着国际交往的增多和旅游业的兴起,由蓝氏贾第鞭毛虫(简称贾第虫)引起的腹泻在旅游者中发病率甚高,故称之为“旅游者腹泻”。贾第虫病在我国日趋流行,分布亦很广泛,有些地区的感染率高达20％,值得重视。调查表明,贾第虫病呈全球流行。寄生虫病往往与经济落后相伴而生,而贾第虫病在经济发达国家亦甚为流行。 人们在旅游时,由于交通工具、住宿环境及饮食的卫生状况较差,如果不注意自身防护,就容易感染贾第虫。感染贾第虫后最常见的就是腹泻,一般半月左右出现。其他还有疲乏、体重下降、腹痛、恶心、稀便、腹胀、发热等。贾第虫主要生 With the increase of international exchanges and the rise of tourism, diarrhea caused by Giardia lamblia (referred to as Giardia) has a high incidence among tourists, so it is called “tourists diarrhea”. Gicarcinosis is becoming more and more popular in our country. It is also widely distributed. In some areas, the infection rate is as high as 20%, which deserves attention. Investigations show that giardiasis is a global epidemic. Parasitic diseases are often accompanied by economic backwardness, and giardiasis is also very prevalent in economically developed countries. When people are traveling, they are vulnerable to Giardia if they do not pay attention to their own protection because of the poor sanitation of transport, accommodation and food and beverages. Diarrhea is most common after giardiasis infection and occurs in about half a month. Others are tired, weight loss, abdominal pain, nausea, loose stools, bloating, fever and so on. Giardia major students