Exam 15: Epidemiology and Nosocomial Infections

An infectious disease in which transmission can occur during the incubation period of disease is considered to be:

A zoonoses refers to an infectious disease that is transmitted

A site where microorganisms can persist and thus maintain the ability to cause infection:

A non-medicinal substance that has no effect on an individual,but the individual believes is a real treatment is known as a

Patients in a hospital setting are typically more susceptible to infections than individuals in the general population and are considered to be

Suppose that you are the State Epidemiologist and you are notified about 10 cases of hemolytic uremic syndrome where the stool samples suggest the agent is either E. coli or Salmonella. Describe the epidemiology of the microbes E. coli and Salmonella (associated with gastrointestinal diseases)including sources of the bacteria,mode of transmission,portals of entry and exit. If during your investigation the laboratory analyses find all of the isolates to be E. Coli but only two of the isolates to be genetically identical,would you consider this an outbreak? Explain your reasoning.

A disease that breaks out in explosive proportions within a population is called

In herd immunity,typically 90% of the population is __________ while 10 % is __________ to an infectious disease.

A common portal of entry for microorganisms is/are

An infection in which the signs and symptoms are not recognized readily because they are too mild:

Why might it be worse to get an infection from someone in the hospital than from someone on a bus? Can you think of a reason why sometimes it might be better to be exposed to a microbe from a hospitalized patient than from someone on the bus?

Which of the following does not contribute to the acquisition of nosocomial infections?

Pathogens that are mainly transients from soil,water,plants or animals usually follow what mode of disease transmission?