V

Vaccine

Vaccines are manufactured in different ways using part of the germ or virus which causes the disease. Except very rarely (oral polio vaccine only) they cannot cause the disease for which they give protection.

Virus

An organism that needs to live inside a cell to grow and reproduce. Viruses cause many types of disease, including the common cold.

Vaccination

is a term used to refer to the administration of any vaccine or toxoid.