Click on a title below to view or download the PDF about that subject.
When there is an infection in the body, the immune system produces proteins to help fight off germs that cause infections – these are called antibodies. In some cases the antibodies will help to completely fight off the infection – this is the case when someone catches a cold or hepatitis A. There are also antibodies produced from vaccines to prevent future infections – such as the hepatitis A vaccine.
There are two types of vaccines:
- A therapeutic vaccine will fight off an existing infection: these work by tricking the immune system into fighting an existing infection
- A protective vaccine given to prevent an infection: these stimulate the body’s immune system to produce proteins called antibodies to fight off a future infect<ion.