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Korean J Parasitol. 2017 Feb;55(1):9-13. doi: 10.3347/kjp.2017.55.1.9. Epub 2017 Feb 28.

High Seroprevalence of Toxoplasmosis Detected by RDT among the Residents of Seokmo-do (Island) in Ganghwa-Gun, Incheon City, Korea.

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Department of Ophthalmology, College of Medicine, Catholic University of Korea, Seoul 06591, Korea.
Genbody Inc., Cheonan 31116, Korea.
Department of Parasitology and Tropical Medicine and Inha Research Institute for Medical Sciences, Inha University School of Medicine, Incheon 22333, Korea.
Department of Medical Environmental Biology, Chung-Ang University College of Medicine, Seoul 06974, Korea.
Department of Parasitology, College of Medicine, the Catholic University of Korea, Seoul 06591, Korea.


Seroprevalence of Toxoplasma gondii infection among the residents of Seokmo-do (Island) in Ganghwa-gun, Incheon, Korea was surveyed for 4 years by a rapid diagnostic test (RDT) using recombinant fragment of major surface antigen (SAG1), GST-linker-SAG1A. Sera from 312, 343, 390, and 362 adult residents were collected on a yearly basis from 2010 to 2013, respectively. Total positive seroprevalence regardless of gender was 29.2, 35.3, 38.7, and 45.3% from 2010 to 2013, respectively. Positive seroprevalence in male adults was 43.9, 48.2, 45.4, and 55.3%, which was far higher than that of the corresponding female adults which was 20.7, 29.2, 33.9, and 38.9%, from 2010 to 2013, respectively. This high seroprevalence of toxoplasmosis in Seokmo-do may have been caused in part by peculiar changes in the toxoplasmic environment of the island as it is a relatively isolated area preserving its natural habitat while also being connected by a bridge to the mainland. Further study is necessary to find out symptomatic patients and to confirm the risk factors.


Korea; Seokmo-do (Island); Toxoplasma gondii; rapid diagnostic test; seroprevalence

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