A number of passengers on a cruise ship from Puerto Rico to the Panama Canal have recently developed a gastrointestinal illness compatible with norovirus (formerly called Norwalk-like virus). Testing for norovirus is not readily available in any nearby island, and the test takes several days even where available. As the epidemiologist called on investigate the outbreak, you do not have facilities to confirm cases at hand for the moment. In this scenario, the best definition of a probable case would be:

The client has experienced an electrical injury of the lower extremities. Which are the priority assessment data to obtain from this client?

The RN has assigned a client who has an open burn wound to the LPN. Which instruction is most important for the RN to provide the LPN?

In the evolution of a new potentially pandemic strain of influenza A, the most significant ‘bottle-neck’ stage before a pandemic can develop is:

British investigators conducted a study to compare measles-mumps-rubella (MMR) vaccine history among 1,294 children with pervasive development disorder (e.g., autism and Asperger’s syndrome) and 4,469 children without such disorders: They found no association. This is an example of which specific type of study?

Select the correct statement concerning the selection of controls in a case-control study:

Life-course Epidemiology is an approach that allows for:

The main advantage of cost-utility analysis and the use of quality adjusted life years or QALYs, as a type of health economic analysis is that:

“A cohort study differs from a case-control study in that:” Which of the following is NOT TRUE:

For the cruise ship scenario described in Question 9, how would you display the time course of the outbreak? (Choose one best answer)