Vaccination 4.3.1.7

Question 1

Why do we need Immunisations?

Answer 1

antibodies stay in our bodies and protect us from getting a disease again

Question 2

How does vaccines work?

Answer 2

injected with a weakened or dead form of the pathogen causing white blood cells to produce antibodies against the pathogen. Antibodies produced can stay in the blood forever so if the same pathogen enters years later white blood cell will produce the correct antibodies quickly.

Question 3

What is Herd immunity?

Answer 3

Where unvaccinated people are protected because the occurrence of the disease is reduced by the number of people who are vaccinated.

Question 4

What are some problems with vaccines?

Answer 4

• one in five children do not receive vaccinations, particularly in developing countries.
• To be effective vaccines must be stored correctly-cool but not frozen.
• Incorrect storage temperatures cause vital proteins in the vaccine to become denatured and the vaccination will not work.
• 151 million vaccines ($570 million) are lost each year due to improper refrigeration in developing countries