鞭毛虫是一种很小的寄生虫,长度只有10微米。其中一种叫兰氏贾第鞭毛虫,形体如纵切的半个梨,有4对鞭毛,它是引起宝宝腹泻的重要病原,免疫球蛋白低、胃酸低及营养状况差的宝宝更易患此病。鞭毛虫寄生在十二指肠及空肠上段,用其吸盘附于肠黏膜上,可引起肠黏膜充血、水肿及浅表溃疡。患儿的症状不一, Flagellates are tiny parasites that are only 10 microns in length. One of them, Giardia lamblia, has a body such as a slitted half a pear with 4 pairs of flagella, an important cause of diarrhea in babies, with low immunoglobulin, low gastric acidity, and poor nutritional status. disease. Flagellates parasitized in the upper duodenum and jejunum, with its sucker attached to the intestinal mucosa, can cause intestinal mucosal congestion, edema and superficial ulcers. Children with different symptoms,