Lecture 19 - Ch 32 Epidemiology Flashcards Preview

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Flashcards in Lecture 19 - Ch 32 Epidemiology Deck (26)
1

The study of the occurrence, distribution, and determinants of health and disease in a population

Epidemiology

2

host and pathogen survive

chronic infections

3

pathogen can be selective force

acute infections

4

disease occurs in a large number of people in a population at the same time

epidemic

5

disease occurs in a large number of people in a population at the same time (world-wide)

pandemic

6

disease is constantly present in a population, usually at low incidences

endemic

7

The _______ of a disease is the number of new cases of the disease in a given period of time

incidence

8

The ________ of a disease is the total number of new and existing cases in a population in a given time

prevalence

9

Diseased individuals who show no or mild symptoms have ___________

subclinical infections

10

Subclinical individuals are called

carriers

11

the incidence of death in a population

mortality

12

the incidence of disease including fatal and nonfatal diseases

morbidity

13

the organism invades and colonizes the host

infection

14

the time between infection and onset of symptoms

incubation period

15

the disease is at its height

acute period

16

disease symptoms are subsiding

decline period

17

patient regains strength and returns to normal

convalescent period

18

sites in which infectious agents remain viable and from which infection of individuals can occur

reservoirs

19

any disease that primarily infects animals, but is occasionally transmitted to humans

zoonosis

20

Pathogen-infected individuals showing no signs of clinical disease

carriers

21

the resistance of a group to infection due to immunity of a high proportion of the group

herd immunity

22

an infectious agent acquired at a healthcare facility

nosocomial infections

23

Restricts the movement of an individual with an active infection

quarantine

24

Diseases that suddenly become prevalent are

emergent

25

diseases that have become prevalent after having been under control

reemerging

26

the use of biological agents to kill a military or civilian population

biological warfare