rubella virus

例句：

1. 1. Rubella is a viral infection that can cause serious illness in children.
   风疹是一种病毒感染，可能导致儿童严重疾病。
2. 2.The vaccine against rubella has been developed to prevent this disease.
   针对风疹的疫苗已经研制出来，以预防这种疾病。
3. 3. Many people are vaccinated against rubella to protect themselves from the virus.
   许多人接种了针对风疹的疫苗，以保护自己免受该病毒的侵害。