Chapter 15 Flashcards
(30 cards)
Father of Immunology?
Edward Jenner
1st completely effective vaccine?
Smallpox
How is diphtheria/tetanus/pertussis routinely administered?
killed subunits
How is polio delivered?
Whole killed visions
Think polio = wholio
MMR?
live attenuated viruses
Pneumococcal conjugate?
heptavalent/diptheria
Haemophilus B conjugate (HiBC)
Diptheria protein conj.
Hepatitis B
Subunit
Rotaviurs?
live attenuated
Varicella?
live attenuated
Meningococcus C?
conjugated capsule subunit
Influenza?
live attenuated or killed
Why is meningitis vaccine delivered as a polysaccharide conjugated to a protein?
Because MHC’s only recognize proteins; the polysaccharide pathogen “hitches a ride” on the protein
Features of effective vaccines?
Safe, protective, gives sustained protection, includes neutralizing antibodies, induces protective T cells, practical considerations (cost, biological stability, ease of administration)
Which route of administration (mucosal or parenteral) elicits both a systemic and mucosal response?
Mucosal
Vaccines must be potent enough to?
Supply appropriate “danger” signals- PAMPs
Do immune responses to components of a pathogen always signify immunity?
NO! You must identify the protective determinants
What are the two broad classifications of vaccines?
- Whole pathogen vaccines
2. Subunit vaccines
A substance used to enhance the adaptive immune responses to a vaccine immunogen. Co-administered with the vaccine immunogen
Adjuvent
This adjuvent is very effective but too toxic for humans; only used in animals
Freund’s adjuvant
This adjuvent is used often in humans; it causes delayed release of antigen and enhanced macrophage intake
Alum (aluminum hydroxide)
What danger signal is typically added to Alum in order to elicit an immune response?
Bordetella pertussis
This adjuvent is a matrix of lipid micelles containing the viral proteins; it delivers antigen to the cytosol to allow for induction of cytotoxic T cells
ISCOMs (a liposome)
An adjuvent that is beginning to be studied; very powerful adjuvent but can be toxic
Bacterial toxins