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Research Article

Assessment of Transmission in Trachoma Programs over Time Suggests No Short-Term Loss of Immunity

  • Fengchen Liu,

    Affiliation: F.I. Proctor Foundation, University of California, San Francisco, California, United States of America

    X
  • Travis C. Porco mail,

    travis.porco@ucsf.edu

    Affiliations: F.I. Proctor Foundation, University of California, San Francisco, California, United States of America, Department of Ophthalmology, University of California, San Francisco, California, United States of America, Department of Epidemiology and Biostatistics, University of California, San Francisco, California, United States of America

    X
  • Kathryn J. Ray,

    Affiliation: F.I. Proctor Foundation, University of California, San Francisco, California, United States of America

    X
  • Robin L. Bailey,

    Affiliation: Faculty of Infectious and Tropical Diseases, Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom

    X
  • Harran Mkocha,

    Affiliation: Kongwa Trachoma Project, Kongwa, Tanzania

    X
  • Beatriz Muñoz,

    Affiliation: Wilmer Eye Institute, Johns Hopkins Hospital, Baltimore, Maryland, United States of America

    X
  • Thomas C. Quinn,

    Affiliation: Johns Hopkins Center for Global Health, Johns Hopkins University, Baltimore, Maryland, United States of America

    X
  • Thomas M. Lietman,

    Affiliations: F.I. Proctor Foundation, University of California, San Francisco, California, United States of America, Department of Ophthalmology, University of California, San Francisco, California, United States of America, Department of Epidemiology and Biostatistics, University of California, San Francisco, California, United States of America

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  • Sheila K. West

    Affiliation: Wilmer Eye Institute, Johns Hopkins Hospital, Baltimore, Maryland, United States of America

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  • Published: July 11, 2013
  • DOI: 10.1371/journal.pntd.0002303

About the Authors

Fengchen Liu, Travis C. Porco, Kathryn J. Ray, Thomas M. Lietman
F.I. Proctor Foundation, University of California, San Francisco, California, United States of America
Travis C. Porco, Thomas M. Lietman
Department of Ophthalmology, University of California, San Francisco, California, United States of America
Travis C. Porco, Thomas M. Lietman
Department of Epidemiology and Biostatistics, University of California, San Francisco, California, United States of America
Robin L. Bailey
Faculty of Infectious and Tropical Diseases, Clinical Research Department, London School of Hygiene and Tropical Medicine, London, United Kingdom
Harran Mkocha
Kongwa Trachoma Project, Kongwa, Tanzania
Beatriz Muñoz, Sheila K. West
Wilmer Eye Institute, Johns Hopkins Hospital, Baltimore, Maryland, United States of America
Thomas C. Quinn
Johns Hopkins Center for Global Health, Johns Hopkins University, Baltimore, Maryland, United States of America

Corresponding Author

Email: travis.porco@ucsf.edu

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: TML TCP FL SKW. Performed the experiments: FL TCP TML SKW HM BM. Analyzed the data: FL TCP TML BM KJR RLB TCQ. Contributed reagents/materials/analysis tools: SKW TML TCP FL. Wrote the paper: TCP FL TML KJR SKW RLB. Contributed to the collection of clinical data: SKW BM HM. Contributed to the cleaning and management of data: BM.