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NR 503 Epidemiology Midterm Questions and
Answers
1. The population of a city on February 15, 2005, was 36,600. The
city has a passive surveillance system that collects hospital and
private physician reports of influenza cases every month. During
the period between January 1 and 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:
Correct! 20 per 1,000 population
2. The population of a city on February 15, 2005, was 36,600. The
city has a passive surveillance system that collects hospital and
private physician reports of influenza cases every month. During
the period between January 1 and 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,
NR 503 Epidemiology Midterm Questions and
Answers
1. The population of a city on February 15, 2005, was 36,600. The
city has a passive surveillance system that collects hospital and
private physician reports of influenza cases every month. During
the period between January 1 and 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:
Correct! 20 per 1,000 population
2. The population of a city on February 15, 2005, was 36,600. The
city has a passive surveillance system that collects hospital and
private physician reports of influenza cases every month. During
the period between January 1 and 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,
