vaccinia vrius

例句：

1. 1. Vaccinia vrius is a highly contagious disease that can cause severe illness in humans.
   牛痘病毒是一种高度传染性的疾病，可以导致人类严重疾病。
2. 2. Vaccinia vrius is the most common strain of the virus responsible for smallpox, which was eradicated by vaccination.
   牛痘病毒是导致天花的最常见毒株，通过接种疫苗已经根除。
3. 3.Researchers are studying the genetic makeup of vaccinia vrius to develop new vaccines against this deadly virus.
   研究人员正在研究牛痘病毒的遗传结构，以开发对抗这种致命病毒的新疫苗。