蛔虫是一种危害人体健康的寄生虫,须经服用药物来驱除。为什么“秋后驱虫”效果最佳呢?当人们吃了不清洁、不卫生的带有蛔虫卵的食物后,卵先在小肠内孵化成幼虫,然后再钻入肠壁,随血液进入肝脏,再通过肝静脉进入心脏,最后到达肺内,在肺泡内暂时寄生。待生长发育到具有一定活动能力时,幼虫便顺着人体的气管、食管、胃,第二次返回到小肠内,这时的蛔虫才是名副其实的“肠道蛔虫”。医学专家们经过科学实验、观察到从“蛔虫卵”到第二次返回小肠的“幼 Roundworms are parasites that endanger human health and are subject to medication. Why is the “autumn insect repellent” the best effect? ​​When people eat unclean, unhealthy food with roundworm eggs, the eggs hatch in the small intestine into larvae, and then into the intestinal wall, with the blood into the liver , Then through the hepatic vein into the heart, and finally reach the lungs, temporary parasites in the alveoli. When the growth and development to have a certain activity ability, the larva will be along the body’s trachea, esophagus, stomach, the second return to the small intestine, then the roundworm is a veritable “intestinal roundworm.” Medical experts through scientific experiments, observed from the “roundworm eggs” to the second return to the small intestine "young