Brady D. Hanshaw is a Student Research Assistant, Division of Infectious Diseases, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

A. Lina Rosengren, MD, MPH, MS, is an Assistant Professor, Division of Infectious Diseases, Department of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

^*Corresponding author: Brady D. Hanshaw, e-mail: [email protected]

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