Upon completion of this activity, participants will be able to:

D. Peter Drotman, MD, Editor-in-Chief, Emerging Infectious Diseases. Disclosure: D. Peter Drotman, MD, has disclosed no relevant financial relationships.

Charles P. Vega, MD, Associate Professor; Residency Director, Department of Family Medicine, University of California, Irvine. Disclosure: Charles P. Vega, MD, has disclosed that he has served as an advisor or consultant to Novartis, Inc

Stephanie Yee-Guardino, DO, Section of Pediatric Infectious Diseases, Cleveland Clinic Children’s Hospital, Cleveland, Ohio. Disclosure: Stephanie Yee-Guardino, DO, has disclosed no relevant financial relationships.

Kate Gowans, MD, Department of Pediatric Hematology and Oncology, Cleveland Clinic Children’s Hospital, Cleveland, Ohio. Disclosure: Kate Gowans, MD, has disclosed no relevant financial relationships.

Belinda Yen-Lieberman, PhD, Laboratory Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Belinda Yen-Lieberman, PhD, has disclosed that she has received reagents at no charge from ARTUS Diagnostics.

Pamela Berk, BS, Department of Molecular Genetics, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Pamela Berk, BS, has disclosed no relevant financial relationships.

Debra Kohn, BS, MT, Laboratory Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Debra Kohn, BS, MT, has disclosed no relevant financial relationships.

Fu-Zhang Wang, PhD, Department of Molecular Genetics, Lerner Research, Institute Cleveland Clinic, Cleveland, Ohio. Disclosure: Fu-Zhang Wang, PhD, has disclosed no relevant financial relationships.

Lara Danziger-Isakov, MD, MPH, Section of Pediatric Infectious Diseases, Cleveland Clinic Children’s Hospital, Cleveland, Ohio; Departments of Infectious Diseases, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Lara Danziger-Isakov, MD, MPH, has disclosed no relevant financial relationships.

Camille Sabella, MD, Section of Pediatric Infectious Diseases, Cleveland Clinic Children’s Hospital, Cleveland, Ohio; Departments of Infectious Diseases, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Camille Sabella, MD, has disclosed that she has received grants from Merck, Inc. and Sanofi Pasteur.

Sarah Worley, MS, Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Sarah Worley, MS, has disclosed no relevant financial relationships.

Philip E. Pellett, PhD, Departments of Infectious Diseases, Department of Molecular Genetics, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Philip E. Pellett, PhD, has disclosed that he has received royalties from Chemicon International.

Johanna Goldfarb, MD, Section of Pediatric Infectious Diseases, Children's Hospital, Cleveland, Ohio; Departments of Infectious Diseases, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio. Disclosure: Johanna Goldfarb, MD, has disclosed no relevant financial relationships..

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 and earn continuing medical education (CME) credit, please go to http://www.medscape.com/cme/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.com. If you are not registered on Medscape.com, 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 is acceptable as evidence of participation in CME activities. If you are not licensed in the US and want to obtain an AMA PRA CME credit, please complete the questions online, print the certificate and present it to your national medical association.