Study concept and design: Gastañaduy, Parashar, Lopman.
Acquisition of data: Curns, Parashar, Lopman.
Analysis and interpretation of data: Gastañaduy, Curns, Parashar, Lopman.
Drafting of the manuscript: Gastañaduy, Parashar.
Critical revision of the manuscript for important intellectual content: Curns, Parashar, Lopman.
Statistical analysis: Gastañaduy, Curns, Lopman.
Administrative, technical, or material support: Gastañaduy, Curns, Parashar.
Study supervision: Parashar, Lopman.
Conflict of Interest Disclosures: The authors have completed and submitted the ICMJE Form for Disclosure of Potential Conflicts of Interest and none were reported.
Disclaimer: The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the Centers for Disease Control and Prevention.