這种病差不多有白蛉子的地方就有被传染的危險,因為白蛉子就是這病傳染的媒介。由於白蛉子吸吮病人的血后,因病人的血液中有黑熱病原蟲(即利什曼小体)的存在,利什曼小體即隨血液入白蛉子的胃部,而成鞭毛體,繁殖發育後,大量存在白蛉子的口腔,此時,如叮咬着健康的人就把鞭毛體注射入人體,鞭毛體入人體後,即失去鞭毛而成為利什曼小體,在網狀內皮細胞 There is a danger of being infected in places where the disease is almost white, because white lice are the medium of infection. Since the blood of the patient is sucked by the white wolfberry, because of the existence of black fever pathogens (ie, Leishmania) in the patient’s blood, the leishmania body enters the stomach of the white lice with the blood and becomes the whiplash. After reproduction and development, there are a large number of oral cavity of white peony. At this time, if a person bites a healthy one, he or she will inject the flagellum into the human body. After the flagellum enters the body, it loses flagella and becomes a Leishman body. Endothelial cells