Flashcards in Ch.18: Vaccines Deck (21):
Are vaccines consider therapy?
No, because therapy is treated for an infection disease while vaccines are used to prevent an infectious disease, which is better then chemotherapy.
What's the goal of an immunization program?
To create a herd immunity within the population
How do you define heard immunity?
More than or equal to 70% to 80% of the population has to be immunized and to prevent an epidemic
What's the goal of heard immunity?
To disrupt the chain of transmission, making less susceptible host available so it can't sweep through the population.
What's the length of time a vaccine is effective for?
Depends on the vaccine
Lifelong immunity in the case of viruses is often achieved without?
Name the vaccines that are attenuated:
* Herpes Zoster
Name some subunit vaccines
* Hepatitis B
What's the ultimate goal of a vaccination program?
Extinction of microbe
What's the most successive medical story in the history of humanity?
Smallpox, declared extinct in the general population
Vaccines can be produced against?
What's the name of the that pneumovax protects people over the age 65?
PPSV23 (pneumococcal polysaccharide vaccine), it protects against 23 different subtypes of pneumococcus
What's one of the new vaccine that would fall in the category of vaccines used in the US to prevent bacterial diseases in humans?
Pneumovax, which fit into the disease pneumococcal pneumonia
Where is the PPSV23 vaccine derived from?
Capsular polysaccharide, no booster needed
By the time you're 11 or 12 years how many vaccines are you expected to have?
12, and hepatitis B is the first one
What's the effectiveness of lifelong immunity?
95%, of the community that's inoculated ends up being protected
What's an inactivated kill vaccine?
* They're killed by chemicals (formalin or phenol)
* Considered safer than live vaccines because they don't affect you
* Often the immunity doesn't last as long
* Usually requires boosters
Name some inactivated killed vaccines:
* Hepatitis A
* Polio (poliomyelitis)
Most vaccines work by stimulating a great production of antibodies, so they stimulate what?
What's possibly the most contagious infections disease?
Measles (it's adapted to humans)