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Volume 17, Number 11—November 2011

CME ACTIVITY - Research

Global Distribution and Epidemiologic Associations of Escherichia coli Clonal Group A, 1998–2007

Earning Medscape CME Credit

To obtain credit, you should first read the journal article. After reading the article, you should be able to answer the following, related, multiple-choice questions. To complete the questions (with a minimum 70% passing score) and earn continuing medical education (CME) credit, please go to www.medscape.org/journal/eid. Credit cannot be obtained for tests completed on paper, although you may use the worksheet below to keep a record of your answers. You must be a registered user on Medscape.org. If you are not registered on Medscape.org, please click on the New Users: Free Registration link on the left hand side of the website to register. Only one answer is correct for each question. Once you successfully answer all post-test questions you will be able to view and/or print your certificate. For questions regarding the content of this activity, contact the accredited provider, CME@medscape.net. For technical assistance, contact CME@webmd.net. American Medical Association’s Physician’s Recognition Award (AMA PRA) credits are accepted in the US as evidence of participation in CME activities. For further information on this award, please refer to http://www.ama-assn.org/ama/pub/category/2922.html. The AMA has determined that physicians not licensed in the US who participate in this CME activity are eligible for AMA PRA Category 1 Credits™. Through agreements that the AMA has made with agencies in some countries, AMA PRA credit may be acceptable as evidence of participation in CME activities. If you are not licensed in the US, please complete the questions online, print the certificate and present it to your national medical association for review.

Article Title: Global Distribution and Epidemiologic Associations of Escherichia coli Clonal Group A, 1998–2007


Medscape CME Questions

1. Which of the following statements regarding clonal group A (CGA) and resistance to trimethoprim/sulfamethoxazole (TMP/SMZ) in the current study is most accurate?

A. Most Escherichia coli isolates resistant to TMP/SMZ were from CGA worldwide

B. Most E. coli isolates resistant to TMP/SMZ were from CGA only among children

C. The prevalence of CGA was higher among E coli isolates resistant to TMP/SMZ

D. The overall prevalence of CGA was approximately 25% among all E. coli isolates

2. Which of the following countries had the highest prevalence of CGA in the current study?

A. United States

B. Taiwan

C. Nigeria

D. Zambia

3. Which of the following variables had the most significant impact on the prevalence of CGA in the current study?

A. Geographic location

B. Age (adult vs. child)

C. Inpatient vs. outpatient status

D. Isolates from urine vs. nonurine specimens

4. Which of the following statements regarding the prevalence of CGA between 1998 and 2007 in the current study is most accurate?

A. The overall prevalence remained roughly similar between the periods from 1998 to 2002 and 2003 to 2007

B. The overall prevalence doubled between the periods from 1998 to 2002 and 2003 to 2007

C. The overall prevalence increased fivefold between the periods from 1998 to 2002 and 2003 to 2007

D. The overall prevalence declined by more than half between the periods from 1998 to 2002 and 2003 to 2007

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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