Question

1. Incubation period refers to the time between the start of an infection and the beginning of the period of communicability.

True

False

2. The case fatality rate is the same thing as the mortality rate for a disease.

True

False

3. The term generation time relates to the time interval between lodgment of an infectious agent in a host and the maximal communicability of the host.

True

False

4. A line list is (check all that apply)

A. a graph

B. a list with sign and symptoms

C. a list with patients' demographics

D. a list with dates of onset

5. What type of information would you collect in a questionnaire while investigating an outbreak? (check all that apply)

A. demographic information   

B. clinical information

C. risk factors

D. height/weight

E. lab results

6. The most common variables collected in line lists are: (check all that apply)

A. food menu

B. demographic information

C. signs and symptoms

D. physician information (i.e. phone number, address)

E. Lab results

7. A case definition should include the following components: (check all that apply)

A. Signs and symptoms

B. Exposure or risk factor

C. Information about the persons (i.e. women ages 65 and over)

D. Information about time (i.e.persons with onset of illness within the past week)

E. information about place (e.g. employees of a particular plant)

8. Which are the most common ways that a local health department uncovers outbreaks? (Check all that apply)

A. Performing descriptive analysis of surveillance data each week.

B. Performing time series analysis to detect deviations from expected values based on the previous few weeks and comparable periods during the previous few years.

C. Receiving calls from affected residents

D. Reviewing all case reports received each week to detect common features

E. Receiving calls from healthcare providers

Answer 1

1. Incubation period refers to the time between the start of an infection and the beginning of the period of communicability.

Answer: Flase

Incubation period is the time period between initial contact with an infectious agent and appearance of the first sign or symptom of disease. The time between the start of an infection and the beginning of the period of communicability is called as the latency period.

2. The case fatality rate is the same thing as the mortality rate for a disease.

Answer: False

Mortality means death and the fatality refers to death by accident, war, or disease. It can be defined as the the proportion of people who die from a specified disease among all individuals diagnosed with the disease over a certain period of time. Ratio of number of deaths from a specified disease over a defined period of time by the number of individuals diagnosed with the disease during that time. Mortality rate is the ratio of he number of deaths by the population at risk during a certain time frame.

3. The term generation time relates to the time interval between lodgment of an infectious agent in a host and the maximal communicability of the host.

Answer: True

4. A line list is:

B. a list with sign and symptoms

C. a list with patients' demographics

D. a list with dates of onset

A line list is the organized table with information about time, person and place whichcan be easily reviewed. A better way to keep track of different categories of cases.