Integrated school-based surveillance for soil-transmitted helminth infections and lymphatic filariasis in Gampaha District, Sri Lanka

  • Sharmini Gunawardena
  • , Nipul K. Gunawardena
  • , Ganga Kahathuduwa
  • , Nadira D. Karunaweera
  • , Nilanthi R. De Silva
  • , Udaya B. Ranasinghe
  • , Sandhya D. Samarasekara
  • , Kumara C. Nagodavithana
  • , Ramakrishna U. Rao
  • , Maria P. Rebollo
  • , Gary J. Weil

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We explored the practicality of integrating surveillance for soil-transmitted helminthiasis (STH, assessed by Kato-Katz) with transmission assessment surveys for lymphatic filariasis (LF) in two evaluation units (EUs) in Gampaha district, Sri Lanka (population 2.3 million). The surveys were performed 6 years after five annual rounds of mass drug administration with diethylcarbamazine and albendazole. Each transmission assessment survey tested children (N = 1,462 inland EU; 1,642 coastal EU) sampled from 30 primary schools. Low filarial antigenemia rates (0% and 0.1% for the inland and coastal EUs) suggest that LF transmission is very low in this district. The STH rates and stool sample participation rates were 0.8% and 61% (inland) and 2.8% and 58% (coastal). Most STH detected were low or moderate intensity Trichuris trichiura infections. The added cost of including STH testing was ∼$5,000 per EU. These results suggest that it is feasible to integrate school-based surveillance for STH and LF.

Original languageEnglish
Pages (from-to)661-666
Number of pages6
JournalAmerican Journal of Tropical Medicine and Hygiene
Volume90
Issue number4
DOIs
StatePublished - Apr 2014

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