尾蚴為卵圓形、乳白色、半透明的泡，頭節(jié)凹陷在泡內，可見有小鉤及吸盤。此種具尾蚴的肉俗稱為米粒肉或豆肉。這種豬肉被人吃了后，如果尾蚴未被殺死，在12指腸中其頭節(jié)自內翻出，借小鉤及吸盤附著于腸壁上，經2～3個月后發(fā)育成熟。成蟲壽命較長，據稱有的可活25年以上。此外，人誤食豬帶絳蟲蟲卵，也可在肌肉、皮下、腦、眼等部位發(fā)育成尾蚴。其感染的方式有：經口誤食被蟲卵污染的食物、水及蔬菜等，或已有該蟲寄生，經被污染的手傳入口中，或由于腸之逆蠕動（惡心嘔吐）將脫落的孕卵節(jié)片返入胃中，其情形與食入大量蟲卵一樣。由此可知．人不僅是豬帶絳蟲的終寄主也可為其中間寄主。豬帶絳蟲病可引起患者消化不良、腹痛、腹瀉、失眠、乏力、頭痛，兒童可影響發(fā) 育。豬尾蚴如寄生在人腦的部位，可引起癲痛、陣發(fā)性昏迷、嘔吐、循環(huán)與呼吸紊亂；寄生在肌肉與皮下組織，可出現局部肌肉酸痛或麻木；寄生在眼的任何部位可引起視力障礙，甚至失明。此蟲為世界性分布，但感染率不高，我國也有分布。豬帶絳蟲病在中國廣泛分布，各地均有散發(fā)病例在東北與華東較牛帶絳蟲病多見，其比例為8∶1與7.1∶1，感染率由不足1%到15.2%。在云南、河南、黑龍江、吉林廣西壯族自治區(qū)等地均有地方性流行。傳染源感染豬帶絳蟲成蟲的人是本病的傳染源在中國農村豬仍以分散飼養(yǎng)為主豬常在圈外活動覓食，故誤吞入人糞中豬帶絳蟲節(jié) 片或蟲卵機會較多。
The cercariae are ovoid, milky white and semitransparent vesicles. The head section is sunken in the vesicles. Small hooks and suckers are visible. This kind of tail meat is commonly known as rice meat or beans. After this kind of pork is eaten by people, if the cercariae are not killed, the head section of the 12-fin intestine is turned upside down and attached to the wall of the intestine by small hooks and suction cups. It matures after 2 to 3 months. Adults live longer, and some are said to live for more than 25 years. In addition, people who eat eggs of tapeworm eggs by mistake may also develop tail lice in muscles, subcutaneous tissues, brains, and eyes. The methods of infection include: Foods, water, and vegetables contaminated with eggs by oral ingestion, or parasitization of the insects, passing through contaminated handpieces, or falling off due to adverse peristalsis of the intestines (nausea and vomiting) The gestational egg section is returned to the stomach in the same way as a large number of eggs. This shows that. People are not only the final host of a tapeworm but also their intermediate host. Swine tapeworm disease can cause dyspepsia, abdominal pain, diarrhea, insomnia, fatigue, headaches, and children can affect development. Pigtails, such as parasites in the human brain, can cause epilepsy, paroxysmal coma, vomiting, circulatory and respiratory disorders; parasitism in muscle and subcutaneous tissue, can occur in local muscle aches or numbness; parasitic in any part of the eye can cause Visually impaired, even blind. This worm is distributed worldwide, but the infection rate is not high and China is also distributed. Swine tsutsugamushi disease is widely distributed in China. There are sporadic cases in the northeast and east China. The ratio is 8:1 and 7.1:1, and the infection rate ranges from less than 1% to 15.2%. In Yunnan, Henan, Heilongjiang, Jilin, Guangxi Zhuang Autonomous Region and other places are endemic. Sources of infection from pigs infected with tapeworm adults are the source of this disease. In rural China, pigs are still distributed as the main pigs often foraging activities outside the ring, so mistaken swallowing pigs with tapeworm or eggs More.

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