What is a vaccination?

What can be in a vaccine?

What is herd immunity?

What is ring immunity?

What is active immunity?

What is passive immunity?

What is natural immunity?

What is artificial immunity?

Why does the flu/influenza vaccine need to be refreshed every year?

Give two reasons why new drugs are needed

Give two possible ways that new medicineas can be discovered with an example

Explain what antibiotics do and suggest a reason why they are becoming ineffective