Part 5: Vaccination Flashcards
First vaccination (name, date, what)
Edward Jenner
1796
Cowpox to protect against smallpox
Vacca
Latin for cow
Note: Pasteur is the first to use the word vaccination
Principle of immunity:
Immunity can be acquired naturally via exposure to antigen OR artificially via induction of immune response.
And immunity can be either active or passive.
Natural and active immunity:
Natural exposure E.g. Immunity following exposure to measles
Natural and passive immunity
Transfer of antibodies produced by others. E.g. mother to child
Artificial and active immunity
Deliberate exposure to antigen E.g. immunization
Artificial and passive immunity
Antibodies injected into body E.g. Ig following dog bite
What type of immunization refers to immunity produced by the body following exposure to antigen (either natural or artificial)
Active immunization
3 vaccine types:
- Inactivated (killed vaccine)
- Live attenuated vaccine
- Subunit vaccines
The type of vaccine that is unable to replicated but retains immunogenicity of infectious agent or toxin
Inactivated (killed) vaccine
What is the advantage of inactivated (killed) vaccine?
Can’t revert to dangerous form
Examples of inactivated (killed) vaccine
- Influenza
- Polio (Salk)
Type of vaccine that is the weakened form of disease-causing microbe that is unable to cause disease
Live attenuated vaccine
How does Live attenuated vaccine work?
It replicates in recipient causing an infection with undetectable or mild disease
Examples of Live attenuated vaccine
- Polio (Sabin)
- MMR