Author Contributions: All authors had full access to all of the data in the study and take responsibility for the integrity of the data and the accuracy of the data analysis.
Study concept and design: Chen, Wilson, Schlagenhauf.
Acquisition of data: Chen, Schlagenhauf.
Analysis and interpretation of data: Chen, Wilson, Schlagenhauf.
Drafting of the manuscript: Chen, Wilson, Schlagenhauf.
Critical revision of the manuscript for important intellectual content: Chen, Wilson, Schlagenhauf.
Administrative, technical, or material support: Chen, Schlagenhauf.
Study supervision: Schlagenhauf.
Financial Disclosures: Dr Chen reports that she has received honoraria for serving on the editorial board of Travel Medicine Advisor, AHC Media LLC. Dr Schlagenhauf reports that she has received research funding honoraria for speaking at conferences from F. Hoffmann La Roche and GlaxoSmithKline and consultancy fees from F. Hoffmann La Roche. Dr Wilson reports no conflicts of interest.
Funding/Support: We report no funding organization or sponsor in the design and conduct of the study; collection, management, analysis, and interpretation of the data; and preparation, review, or approval of the manuscript.
Acknowledgment: We thank the following colleagues for their input regarding their health authority guidelines: David R. Hill, MD, DTM&H, National Travel Health Network and Centre, and London School of Hygiene and Tropical Medicine, London, England; Karin Leder, MD, MPH, DTMH, Monash University, Melbourne, Australia; Anne McCarthy, MD, MSc, FRCPC, DTMH, Ottawa Hospital, and University of Ottawa, Ottawa, Canada; Tetsuya Nakamura, MD, University of Tokyo, Tokyo, Japan; and Philippe Parola, MD, PhD, University Hospital of Marseille, Marseille, France. We also thank Wei-Fan Chen, MD, for translating the Japanese guidelines and Mr Hanspeter Jauss for assistance with the P vivax map. Drs Hill, Leder, McCarthy, Nakamura, Parola, and Chen received no compensation for their contributions.