Ch.18: Vaccines Flashcards Preview

Microbiology > Ch.18: Vaccines > Flashcards

Flashcards in Ch.18: Vaccines Deck (21):
1

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.

2

What's the goal of an immunization program?

To create a herd immunity within the population

3

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

4

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.

5

What's the length of time a vaccine is effective for?

Depends on the vaccine

6

Lifelong immunity in the case of viruses is often achieved without?

Boosters

7

Name the vaccines that are attenuated:

* Chickenpox
* MMR
* Herpes Zoster

8

Name some subunit vaccines

* Hepatitis B
* HPV

9

What's the ultimate goal of a vaccination program?

Extinction of microbe

10

What's the most successive medical story in the history of humanity?

Smallpox, declared extinct in the general population

11

Vaccines can be produced against?

* Bacteria
* viruses
* toxins

12

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

13

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

14

Where is the PPSV23 vaccine derived from?

Capsular polysaccharide, no booster needed

15

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

16

What's the effectiveness of lifelong immunity?

95%, of the community that's inoculated ends up being protected

17

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

18

Name some inactivated killed vaccines:

* Hepatitis A
* Rabies
* Polio (poliomyelitis)

19

Most vaccines work by stimulating a great production of antibodies, so they stimulate what?

Hummoral immunity

20

What's possibly the most contagious infections disease?

Measles (it's adapted to humans)

21

What is a live attenuated vaccine?

It closes mimics to getting infected with a very weakened strain of the virus and may have prodromal symptoms, it can infect you but it doesn't induce the infectious disease