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

15 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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