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The Global Burden of Trachoma: A Review

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  • Matthew J Burton
  • David C W Mabey

Abstract

Trachoma is the commonest infectious cause of blindness worldwide. Recurrent infection of the ocular surface by Chlamydia trachomatis, the causative agent, leads to inturning of the eyelashes (trichiasis) and blinding corneal opacification. Trachoma is endemic in more than 50 countries. It is currently estimated that there are about 1.3 million people blind from the disease and a further 8.2 million have trichiasis. Several estimates for the burden of disease from trachoma have been made, giving quite variable results. The variation is partly because different prevalence data have been used and partly because different sequelae have been included. The most recent estimate from the WHO placed it at around 1.3 million Disability-Adjusted Life Years (DALYs). A key issue in producing a reliable estimate of the global burden of trachoma is the limited amount of reliable survey data from endemic regions.Author Summary: This review examines the various attempts to estimate the burden of disease from trachoma, the commonest infectious cause of blindness worldwide. Reports vary considerably because of differences in methodology and changing estimates of the number of people affected. Currently about 1.3 million are blind from trachoma and it causes about 1.3 million Disability-Adjusted Life Years (DALYs). The limited amount of survey data available from endemic regions remains a problem in generating accurate estimates. The effect of the disease may be underestimated as some of the disabling sequelae are not included in the calculation.

Suggested Citation

  • Matthew J Burton & David C W Mabey, 2009. "The Global Burden of Trachoma: A Review," PLOS Neglected Tropical Diseases, Public Library of Science, vol. 3(10), pages 1-7, October.
    • Handle: RePEc:plo:pntd00:0000460
    DOI: 10.1371/journal.pntd.0000460
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    Cited by:

    1. Matthew C Kim & Kazunori Okada & Alexander M Ryner & Abdou Amza & Zerihun Tadesse & Sun Y Cotter & Bruce D Gaynor & Jeremy D Keenan & Thomas M Lietman & Travis C Porco, 2019. "Sensitivity and specificity of computer vision classification of eyelid photographs for programmatic trachoma assessment," PLOS ONE, Public Library of Science, vol. 14(2), pages 1-12, February.
    2. Yvonne Pannekoek & Veerle Dickx & Delphine S A Beeckman & Keith A Jolley & Wendy C Keijzers & Evangelia Vretou & Martin C J Maiden & Daisy Vanrompay & Arie van der Ende, 2010. "Multi Locus Sequence Typing of Chlamydia Reveals an Association between Chlamydia psittaci Genotypes and Host Species," PLOS ONE, Public Library of Science, vol. 5(12), pages 1-9, December.

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