1. Vaccinations Activate our acquired immune system
Cause creation of memory cells
Prevent us from showing symptoms of disease even if we are exposed to it
Prevent us from transmitting disease to others
Can eradicate disease causing agents from the face of the earth!

2. Smallpox virus
wiped off the face of the earth, except for samples held in labs in the U. S. & Russia
1 or 2 people in 1 million who receive the vaccine may die as a result because this is a live vaccine of a pox vaccine similar to small pox ( %)

3. How we make vaccinations
Viruses are identified & isolated from host
Host cells must be found in which viruses can reproduce ( eggs, tissue culture)
Viruses are injected into host cells, millions of viruses are produced.
Viruses are isolated from host cells/purified
Viruses are either killed or weakened

4. Between 1990 and 1995 in the UK, there were 5433 suspected adverse reactions to all the vaccines given to children under 15 years of age - out of around 80 million doses of vaccine - that's % of cases. Only a tiny number of those were serious.