Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RUSVM Virology Exam 1 > Epidemiology of Viral Diseases > Flashcards

Epidemiology of Viral Diseases Flashcards

1
Q

What is virus epidemiology?

A

Study of determinants, frequency, dynamics, and distribution of viral diseases in populations

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the case fatality rate?

A

Number (%) of deaths among clinically ill animals

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the Mortality rate?

A

Number (%) of animals in population that die from particular disease over a specific period to time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is morbidity rate?

A

% of animals in population that develop clinical signs attributable to particular virus over defined period of time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The incidence is the number of _______ cases in population over a ________ period of time

A
  1. New

2. Specified

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Prevalence is the number of _____ and _______ occurrences of disease, infection, or related attributes in population over _________ point of time

A
  1. Old
  2. New
  3. Particular
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is a sporadic viral disease?

A

Occurs occasionally, singly, or in scattered instances, and in irregular and haphazard manner

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is an enzootic viral disease?

A

Constant presence of viral disease w/in given geographic are or population group

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is an epizootic viral disease?

A

Occurrence of more cases of viral diseases than expected in given area or among specific group of people/animals over particular period of time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is a panzootic viral disease?

A

Occurring over very wide area and usually affecting a large proportion of the population

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Asymptomatic carriers have contracted infectious viral disease, but display _____ clinical symptoms

A

No

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a contagious disease?

A

Spread form one persons/organism to another by direct or indirect contact

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the period of contagiousness?

A

Time during which infected animal sheds virus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is an exotic disease?

A

Not known to occur in particular country or geographical area

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is seroepidemiology?

A

Use of serological data as basis of epidemiological investigation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What is molecular epidemiology of viruses?

A

Use of molecular biological date as basis of epidemiological investigation of viral diseases

17
Q

What are two types of virus transmission?

A
  1. Horizontal

2. Vertical

18
Q

What is horizontal transmission?

A

Spread of an infectious agent from one person/animal or group to another person/animal or group

20
Q

What are two types of contact transmission?

A
  1. Direct

2. Indirect

21
Q

What are the 5 types of horizontal transmission?

A
  1. Contact
  2. Indirect contact
  3. Vector
  4. Vehicle-borne
  5. Latrogenic
  6. Nosocomial
22
Q

What are arboviruses?

A

Viruses transmitted to humans by Arthropoda such as mosquitoes and ticks

23
Q

What are 3 types of transmission cycles?

A
  1. Enzootic cycle (Jungle cycle)
  2. Epizootic cycle (Rural cycle)
  3. Urban cycle
24
Q

What is an amplifying host?

A

The level of virus can become high enough that an insect vector such as mosquito will probably become infectious

25
Q

What is common-vehicle transmission?

A

Fecal contamination of food and water supplies and virus contaminated meat and bone products

26
Q

What is latrogenic transmission?

A

Transferred during medical or surgical practice

27
Q

Nosocomial transmission is also know as what?

A

Hospital acquired infection

28
Q

What is vertical transmission?

A

Transferred from dam to embryo, or fetus, or newborn before, during, or shortly after parturition

29
Q

Viruses transmitted via respiratory route have _____ environmental stability, whereas those transmitted via fecal-oral route have ______ stability

A
  1. Low

2. Higher

30
Q

Herd immunity is a form of immunity that occurs when the vaccination of a significant _______ portion of a population provides a measure of protection for individuals who have not developed immunity

A

Large

31
Q

What is the 5 step course of a typical infectious disease?

A
  1. Incubation period
  2. Prodromal period
  3. Acute period
  4. Decline period
  5. Convalescent period
33
Q

What are 2 types of vector transmission?

A
  1. Mechanical

2. Biological

RUSVM Virology Exam 1 (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions