What do you mean by vaccination?

Vaccination is the administration of a vaccine to help the immune system develop protection from disease.

• Vaccines contain a small, harmless piece of the virus or bacteria that causes the disease.
• This piece is called an antigen. When a vaccine is given, the immune system recognizes the antigen as foreign and develops immunity to it.
• This process helps to protect the individual from future infection or disease caused by the actual virus or bacteria.