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Volume 23, Number 6—June 2017

CME ACTIVITY - Research

Relative Risk for Ehrlichiosis and Lyme Disease in an Area Where Vectors for Both Are Sympatric, New Jersey, USA

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Article Title:
Relative Risk for Ehrlichiosis and Lyme Disease in an Area Where Vectors for Both are Sympatric, New Jersey, USA

CME Questions

1. You are seeing a 23-year-old previously healthy woman for a 2-day history of fever and headache. She spent last week hiking in the mountains, and you are concerned that she may have a tick-borne illness. Which of the following statements regarding the clinical presentation and prognosis of ehrlichiosis is most accurate?

A. It frequently presents with more general symptoms such as fever and headache

B. Rash is necessary to make the clinical diagnosis of ehrlichiosis

C. Ehrlichiosis is not associated with any organ damage

D. Mortality rates associated with ehrlichiosis may be as high as 20%

2. You obtain a more thorough history of tick exposures from this patient. What should you consider regarding the vectors for ehrlichiosis and Lyme disease?

A. Ixodes scapularis can transmit both Borrelia burgdorferi and Ehrlichia chaffeensis

B. I. scapularis is much more aggressive than Amblyomma americanum

C. A. americanum has historically been found in the southeastern United States

D. Samples of A. americanum have been declining in New Jersey

3. Ehrlichiosis is in your differential diagnosis for this patient. What was the predicted ratio of ehrlichiosis to Lyme disease in the current study?

A. 0.05

B. 0.6

C. 1.0

D. 2.3

4. How did the actual rate of reported ehrlichiosis compare with that in the statistical model in the current study?

A. The actual rate of ehrlichiosis was approximately 100% lower than that in the model

B. The actual rate of ehrlichiosis was approximately 20% lower than that in the model

C. The actual rate of ehrlichiosis was approximately the same as that in the model

D. The actual rate of ehrlichiosis was approximately 50% higher than that in the model

Activity Evaluation

1. The activity supported the learning objectives.

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2. The material was organized clearly for learning to occur.

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3. The content learned from this activity will impact my practice.

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4. The activity was presented objectively and free of commercial bias.

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