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An investigation of the disparity in estimates of microfilaraemia and antigenaemia in lymphatic filariasis surveys

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  • Jorge Cano
  • Paula Moraga
  • Birgit Nikolay
  • Maria P Rebollo
  • Patricia N Okorie
  • Emmanuel Davies
  • Sammy M Njenga
  • Moses J Bockarie
  • Simon J Brooker
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<mark>Journal publication date</mark>08/2015
<mark>Journal</mark>Transactions of The Royal Society of Tropical Medicine and Hygiene
Issue number8
Volume109
Number of pages3
Pages (from-to)529-531
Publication StatusPublished
<mark>Original language</mark>English

Abstract

BACKGROUND: The diagnosis of lymphatic filariasis (LF) is based typically on either microfilaraemia as assessed by microscopy or filarial antigenaemia using an immuno-chromatographic test. While it is known that estimates of antigenaemia are generally higher than estimates of microfilaraemia, the extent of the difference is not known.

METHODS: This paper presents the results of an extensive literature search for surveys that estimated both microfilaraemia and antigenaemia in order to better understand the disparity between the two measures.

RESULTS AND CONCLUSIONS: In some settings there was a very large disparity, up to 40-70%, between estimates of microfilaraemia and antigenaemia. Regression analysis was unable to identify any predictable relationship between the two measures. The implications of findings for risk mapping and surveillance of LF are discussed.

Bibliographic note

© The Author 2015. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.