Some local factors to destroy intestine crest cells such as ischemia, hypoxia, immune factors, Epstein-Barr virus and parasite infection.

某些局部因素。如缺血、缺氧、免疫因素、巨细胞病毒和寄生虫感染等毁坏了肠壁内神经嵴细胞。

youdao

Many people have resorted to buying bottled water, and as the parasite particularly puts older people at risk, free supplies are being delivered to local nursing homes.

BBC: News Online