B6.1 Vaccines

Question 1

How do vaccines work?

Answer 1

A dead or inactive form of a pathogen is injected
White blood cells produce the secured antibodies needed
Antibodies can be made faster upon future infection providing IMUNNITY

Question 2

What is herd immunity ?

Answer 2

When the spread of a disease is reduced when a large majority of the population is immune to a disease
Resulting in less people being able to spread the disease

Question 3

Describe 3 differences between initial and secondary exposure ?

Answer 3

Antibodies are produced quicker in secondary exposure
More antibodies are produced in secondary exposure
The antibody concentration remains higher for longer in secondary response

Question 4

What are the pros and cons of vaccines

Answer 4

Pros
Allows me the right antibodies to be produced faster
Protection form both bacterial and viral diseases
Immunity
Protects unvaccinated people as well (herd immunity)

Cons
Requires an injection
Requires a visit to the doctor which takes time
Side effects
Ethics
Often needs repeating