About the Authors

Iana H. Haralambieva

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Visualization, Writing – original draft, Writing – review & editing

Affiliation Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN, United States of America

Michael J. Gibson

Roles Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN, United States of America

Richard B. Kennedy

Roles Conceptualization, Investigation, Methodology, Project administration, Resources, Supervision, Writing – review & editing

Affiliation Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN, United States of America

Inna G. Ovsyannikova

Roles Conceptualization, Project administration, Resources, Supervision, Writing – review & editing

Affiliation Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN, United States of America

Nathaniel D. Warner

Roles Data curation, Formal analysis, Software, Visualization, Writing – review & editing

Affiliation Division of Biomedical Statistics and Informatics- Department of Health Science Research, Mayo Clinic and Foundation, Rochester, MN, United States of America

Diane E. Grill

Roles Conceptualization, Data curation, Formal analysis, Methodology, Software, Writing – review & editing

Affiliation Division of Biomedical Statistics and Informatics- Department of Health Science Research, Mayo Clinic and Foundation, Rochester, MN, United States of America

Gregory A. Poland

Roles Conceptualization, Funding acquisition, Project administration, Resources, Supervision, Writing – review & editing

Poland.gregory@mayo.edu

Affiliation Mayo Vaccine Research Group, Mayo Clinic and Foundation, Rochester, MN, United States of America

Competing Interests

Dr. Poland is the chair of a Safety Evaluation Committee for novel investigational vaccine trials being conducted by Merck Research Laboratories. Dr. Poland offers consultative advice on vaccine development to Merck & Co. Inc., Avianax, Dynavax, Novartis Vaccines and Therapeutics, Adjuvance Technologies, Seqirus, and Protein Sciences. Drs. Poland and Ovsyannikova hold three patents related to measles and vaccinia peptide research. Dr. Kennedy has received funding from Merck Research Laboratories to study waning immunity to measles and mumps after immunization with MMR-II. These activities have been reviewed by the Mayo Clinic Conflict of Interest Review Board and are conducted in compliance with Mayo Clinic Conflict of Interest policies. This research has been reviewed by the Mayo Clinic Conflict of Interest Review Board and was conducted in compliance with Mayo Clinic Conflict of Interest policies. This does not alter our adherence to PLOS ONE policies on sharing data and materials.