Helminth worm infections can give the mothers symptoms such as mild anemia or stomach pain and vomiting .
蛔虫感染能让妈妈们患上一些症状，比如轻度贫血，胃疼，呕吐。
Now a new study supports the hygiene hypothesis : infants in uganda had a lower chance of developing the skin allergy condition eczema if their moms had helminth worm infections while pregnant .
