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High prevalence of ascariasis on two coral atolls in the Solomon Islands

journal contribution
posted on 10.10.2018, 00:00 by Richard BradburyRichard Bradbury, H Harrington, E Kekeubata, D Esau, T Esau, F Kilivisi, N Harrington, J Gwala, R Speare, David MacLaren
Background: There is a deficiency in up-to-date soil-transmitted helminth (STH) prevalence data for many regions, including Oceania. This study investigated the prevalence of STH in two closely associated coral atoll communities in East Kwaio, Solomon Islands, reflective of many similar island communities throughout the Oceania region. Methods: An STH survey, using the Kato-Katz technique, was conducted on human subjects living on two coral atolls in the Eastern Solomon Islands. The capacity of Ascaris lumbricoides eggs to float in seawater was also evaluated by passive flotation. Results: Of 583 people tested on both islands, 311 (53.3%) harboured A. lumbricoides, with 51.7% (n=161) of those having moderate to high-intensity infections. Hookworm was detected in 139 (23.7%) participants and Trichuris trichiura infection in 18 (3.1%). A. lumbricoides eggs were not found to float in seawater. Discussion: The high prevalence and intensity of ascariasis on these two atolls was contrasted with previously described STH studies in mainland East Kwaio villages, where hookworm predominates and ascariasis is almost absent. This led to a preliminary consideration that transmission of A. lumbricoides on densely populated coral atolls might be associated with defecation into the sea and transmission in seawater, although further work is required to investigate this hypothesis. © The Author(s) 2018. Published by Oxford University Press on behalf of Royal Society of Tropical Medicine and Hygiene. All rights reserved.

Funding

Other

History

Volume

112

Issue

4

Start Page

193

End Page

199

Number of Pages

7

eISSN

1878-3503

ISSN

0035-9203

Publisher

Oxford University Press, UK

Peer Reviewed

Yes

Open Access

No

Acceptance Date

20/05/2018

Era Eligible

Yes

Journal

Transactions of the Royal Society of Tropical Medicine and Hygiene

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