Author Contributions: Drs Markel and Cetron 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: Markel, Lipman, Navarro, Stern, Cetron.
Acquisition of data: Markel, Navarro, Sloan, Michalsen, Stern.
Analysis and interpretation of data: Markel, Lipman, Navarro, Sloan, Michalsen, Stern, Cetron.
Drafting of the manuscript: Markel, Lipman, Navarro, Sloan, Michalsen, Stern, Cetron.
Critical revision of the manuscript for important intellectual content: Markel, Lipman, Navarro, Stern, Cetron.
Statistical analysis: Markel, Lipman, Cetron.
Obtained funding: Markel, Cetron.
Administrative, technical, or material support: Markel, Navarro, Sloan, Michalsen, Cetron.
Study supervision: Markel, Cetron.
Financial Disclosures: None reported.
Funding/Support: This study was funded by a contract from the US Centers for Disease Control and Prevention (Sol No. 2006-N-08562, Non-Pharmaceutical Interventions Study/contract 200-2006-16894).
Role of the Sponsor: The US Centers for Disease Control and Prevention provided funding as part of pandemic preparedness research. Drs Cetron and Lipman from the Division of Global Migration and Quarantine at the Centers for Disease Control and Prevention participated as full scientific collaborators in the investigation.
Acknowledgment: Matthew Cartter, MD, MPH, Cleto DiGiovanni Jr, Jeffrey Duchin, MD, Bruce Gellin, MD, Richard Goodman, MD, JD, Daniel Jernigan, MD, MPH, Lisa Koonin, MN, MPH, Anthony Marfin, MD, Martin Meltzer, PhD, William Thompson, PhD, David Shay, MD, and Mary Wilson, MD, provided constructive review of this manuscript. No one mentioned in this section was compensated for contributing.