About the Authors

Michael E. Powers

Affiliation Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America

Juliane Bubeck Wardenburg

jbubeckw@peds.bsd.uchicago.edu

Affiliations Department of Microbiology, The University of Chicago, Chicago, Illinois, United States of America, Department of Pediatrics, The University of Chicago, Chicago, Illinois, United States of America

Competing Interests

I have read the journal's policy and have the following conflicts: JBW has the potential to receive royalties from Novartis Vaccines and Diagnostics in relation to patents owned by the University of Chicago. This does not alter our adherence to all PLOS policies on sharing data and materials.