Exam 13: Epidemiology: Who, What, When, Where, and Why

In the 1999 West Nile virus outbreak in New York City, which of the following pieces of evidence suggested that the pathogen under investigation was not St. Louis encephalitis (SLE)?

The incidence of disease:

Which of the following pathogens would most likely be used as a bioterrorism agent?

In which of the following types of viruses is antigenic shift most likely?

Which of the following is a characteristic of a commonsource epidemic?

How can a vaccine program prevent epidemics?

When a new disease appears, which of the following is developed first?

Epidemic paralytic polio:

Into which category of emergent diseases would dengue be placed?

What is antigenic drift? Why are RNA viruses more prone to this phenomenon than DNA viruses are?

Describe the design of a case-control study and how it is used to identify the cause of an epidemic.

A particular type of virus occasionally undergoes antigenic shift. In which of the following situations is antigenic shift most likely?

The likelihood of a host-to-host epidemic is highest when: