Vaccinations Flashcards
1
Q
What type of infections do vaccines prevent
A
Viral infections
2
Q
Do vaccines only prevent viruses
A
No, some are used for bacterial infections
3
Q
Are vaccines given before or after an infection
A
They are given before an infection
4
Q
How do vaccines help the immune system
A
- Vaccines contain dead/weakened versions of the virus, meaning they do not infect the person but do cause an immune response
- The white blood cells then produce specific antibodies to fight the infection
- So if the person catches the virus, then the white blood cells can make the antibodies faster
5
Q
What is herd immunity
A
When a sufficient percentage of a population has become immune to an infection so there is less likelihood of infection for individuals without immunity.
6
Q
What is natural immunity
A
When a person gets an infection and can fight it without a vaccine