Epidemiology-Outbreak Investigations

Question 1

Step one in outbreak investigation

Answer 1

Prepare for field work (assign team)

Question 2

Step two in outbreak investigation

Answer 2

Confirm outbreak (labs, is incidence excess of expected)

Question 3

Step three in outbreak investigation

Answer 3

Case definition (who are you counting as sick) and count cases

Question 4

Types of case definitions

Answer 4

*

Question 5

Kaplan criteria

Answer 5

Case definitions for Norovirus

Question 6

Step four in outbreak investigations

Answer 6

Find additional unreported cases from population at risk.

Question 7

Step five in outbreak investigations

Answer 7

Tabulate and orient data in person, place and time (EpiInfo). Generate epidemic curve.

Question 8

Types of epidemics

Answer 8

Point source, continuous, propagated

Question 9

Step six in outbreak investigations

Answer 9

Choose a study design (Prevalence = cross-sectional, known cases = case control, known exposures = cohort)

Question 10

Step seven in outbreak investigations

Answer 10

Collect risk/exposure information (age, food, location etc.)

Question 11

Step eight in outbreak investigation

Answer 11

Lab analysis (food, environmental samples)

Question 12

Step nine in outbreak investigation

Answer 12

Conduct environmental assessment

Question 13

Step ten in outbreak investigations

Answer 13

Implement control measures

Question 14

Epidemiologic triad

Answer 14

Stop disease transmission by direct or indirect contact (isolate people who are sick or quarantine people who are not yet sick, but may become sick)

Question 15

Step eleven in outbreak investigations

Answer 15

Formulate and test hypothesis to explain outbreak

Question 16

Step twelve in outbreak investigations

Answer 16

Plan additional studies

Question 17

Step thirteen in outbreak investigations

Answer 17

Communicate findings to public and leadership