NR 503 Epidemiology midterm questions &
answers UPDATE GRADED A+
The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system
that collects hospital & private physician reports of influenza cases every month. During the period
between January 1 & April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases,
775 persons were ill with influenza according to surveillance reports on April 1, 2005. The prevalence
rate of active influenza as of April 1, 2005, was:
20 per 1,000 population
The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system
that collects hospital & private physician reports of influenza cases every month. During the period
between January 1 & April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases,
775 persons were ill with influenza according to surveillance reports on April 1, 2005. The monthly
incidence rate of active cases of influenza for the 3-month period was:
20 per 1,000 population
What would be the effect on age-specific incidence rates of uterine cancer if women with
hysterectomies were excluded from the denominator of incidence calculations assuming that most
women who have had hysterectomies are older than 50 years of age?
Rates would increase in women older than 50 years of age but may decrease in younger women as
they get older.
The ability of a single person to remain free of clinical illness following exposure to an infectious agent
is known as:
Immunity
Which of the following reasons can explain why a person who did not consume the infective food
item got sick?
All of the above
Which of the food items (or combination of items) is most likely to be the infective item(s)?
Ice cream only
The case-fatality rate associated with plague is lowest in which community?
Community C
The incidence & prevalence rates of a chronic childhood illness for a specific community are given
below.
The duration of disease is becoming longer
The following table gives the mean annual age-specific mortality rates from measles during the first
25 years of life in successive 5-year periods. You may assume that the population is in a steady state
(i.e., migrations out are equal to migrations in). Based on the information above, one may conclude:
Children ages 5 to 9 had the highest rate of death in all periods
. In a country with a population of 16 million people, 175,000 deaths occurred during the year ending
December 31, 2005. These included 45,000 deaths from tuberculosis (TB) in 135,000 persons who
answers UPDATE GRADED A+
The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system
that collects hospital & private physician reports of influenza cases every month. During the period
between January 1 & April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases,
775 persons were ill with influenza according to surveillance reports on April 1, 2005. The prevalence
rate of active influenza as of April 1, 2005, was:
20 per 1,000 population
The population of a city on February 15, 2005, was 36,600. The city has a passive surveillance system
that collects hospital & private physician reports of influenza cases every month. During the period
between January 1 & April 1, 2005, 2,200 new cases of influenza occurred in the city. Of these cases,
775 persons were ill with influenza according to surveillance reports on April 1, 2005. The monthly
incidence rate of active cases of influenza for the 3-month period was:
20 per 1,000 population
What would be the effect on age-specific incidence rates of uterine cancer if women with
hysterectomies were excluded from the denominator of incidence calculations assuming that most
women who have had hysterectomies are older than 50 years of age?
Rates would increase in women older than 50 years of age but may decrease in younger women as
they get older.
The ability of a single person to remain free of clinical illness following exposure to an infectious agent
is known as:
Immunity
Which of the following reasons can explain why a person who did not consume the infective food
item got sick?
All of the above
Which of the food items (or combination of items) is most likely to be the infective item(s)?
Ice cream only
The case-fatality rate associated with plague is lowest in which community?
Community C
The incidence & prevalence rates of a chronic childhood illness for a specific community are given
below.
The duration of disease is becoming longer
The following table gives the mean annual age-specific mortality rates from measles during the first
25 years of life in successive 5-year periods. You may assume that the population is in a steady state
(i.e., migrations out are equal to migrations in). Based on the information above, one may conclude:
Children ages 5 to 9 had the highest rate of death in all periods
. In a country with a population of 16 million people, 175,000 deaths occurred during the year ending
December 31, 2005. These included 45,000 deaths from tuberculosis (TB) in 135,000 persons who
