About the Authors

Curtis Croker

ccroker@ph.lacounty.gov

Affiliation Acute Communicable Disease Control Program, County of Los Angeles Department of Public Health, Los Angeles, California, United States of America

Matthew Redelings

Affiliation Data Collection and Analysis Program, County of Los Angeles Department of Public Health, Los Angeles, California, United States of America

Roshan Reporter

Affiliation Acute Communicable Disease Control Program, County of Los Angeles Department of Public Health, Los Angeles, California, United States of America

Frank Sorvillo

Affiliation Data Collection and Analysis Program, County of Los Angeles Department of Public Health, Los Angeles, California, United States of America

Laurene Mascola

Affiliation Acute Communicable Disease Control Program, County of Los Angeles Department of Public Health, Los Angeles, California, United States of America

Patricia Wilkins

Affiliation Division of Parasitic Diseases & Malaria, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America

Competing Interests

Patty Wilkins (co-author on this manuscript) is on the PLoS ONE editorial board. Aside from this, the authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CC MR RR FS LM PW. Performed the experiments: CC. Analyzed the data: CC. Contributed reagents/materials/analysis tools: CC MR. Wrote the paper: CC MR RR FS LM PW.