Soil-Transmitted Helminthiasis in Laos: A Community-Wide Cross-Sectional Study of Humans and Dogs in a Mass Drug Administration Environment

Title
Soil-Transmitted Helminthiasis in Laos: A Community-Wide Cross-Sectional Study of Humans and Dogs in a Mass Drug Administration Environment
Authors
Conlan, JV; Khamlome, B; Vongxay, K; Elliot, A; Pallant, L; Sripa, B; Blacksell, SD; Fenwick, S; Thompson, RCA
Keywords
ANCYLOSTOMA-CEYLANICUM; HOOKWORM INFECTION; SCHISTOSOMA-MANSONI; NECATOR-AMERICANUS; HAINAN PROVINCE; RISK-FACTORS; INTENSITY; ANEMIA; CHILDREN; SCHOOLCHILDREN
Issue Date
2012
Publisher
AM J TROP MED HYG
Citation
Am. J. Trop. Med. Hyg.;APR;2012;86;4
Abstract
We conducted a community cross-sectional survey of soil-transmitted helminthiasis in humans and dogs in four provinces in northern Laos. We collected and tested human and dog fecal samples and analyzed results against sociodemographic data. The prevalence of Ascaris lumbricoides, Trichuris trichiura, hookworm, and Strongyloides stercoralis was 26.1% (95% confidence interval [CI,1 = 23.7-28.4%), 41.5% (95% CI = 38.8-44.1%), 46.3% (95% CI = 43.3-49.0%), and 8.9% (95% CI = 7.4-10.4%), respectively. We observed strong heterogeneity for helminthiasis by ethnicity, province, and wealth status, which coincided with a risk profile demonstrating that Mon-Khmer persons and the poorest households are highly vulnerable. Necator americanus was the dominant hookworm species infecting humans and Ancylostoma ceylanicum was the only Ancylastoma species detected. Hookworm prevalence in village dogs was 94%, and the dominant species was A. ceylanicum. Necator americanus was also detected in dogs. It appears that dogs have a role in human hookworm transmission and warrant further investigation.
URI
http://hdl.handle.net/11267/2531
ISSN
0002-9637
Appears in Collections:
2.Ministry of Health > Journal articles
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