vaccine in English:

1. a substance that is injected to protect sb from a disease

2. a substance containing a virus or bacterium in a form given to a person or animal to prevent them from getting the disease

3. a substance containing a virus or bacterium in a form that is not harmful given to a person or animal to prevent them from getting the disease that the virus or bacterium causes

4. a substance that is given to people to stop them from getting a particular disease