About the Authors

Caroline Marshall

caroline.marshall@mh.org.au

Affiliation Victorian Infectious Diseases Service, Royal Melbourne Hospital and Department of Medicine, University of Melbourne, Parkville, Victoria, Australia

Michael Richards

Affiliation Victorian Infectious Diseases Service, Royal Melbourne Hospital and Department of Medicine, University of Melbourne, Parkville, Victoria, Australia

Emma McBryde

Affiliation Victorian Infectious Diseases Service, Royal Melbourne Hospital and Department of Medicine, University of Melbourne, Parkville, Victoria, Australia

Competing Interests

Becton Dickinson supplied the swabs for this study. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.

Author Contributions

Conceived and designed the experiments: CM EM MR. Analyzed the data: EM CM. Wrote the paper: CM EM MR.