Newcastle disease virus

例句：

1. 1. The outbreak of the Newcastle disease has caused great concern among animal owners.
   新城疫的爆发引起了动物主人极大的关注。
2. 2.Researchers are working to develop a vaccine against the Newcastle disease.
   研究人员正在努力开发一种对抗新城疫的疫苗。
3. 3.The Newcastle disease is primarily spread through contact with infected animals.
   新城疫主要通过与感染动物接触传播。