| Sook Park | 2 Articles |
The present study was performed to investigate the infection status with Clonorchis sinensis metacercariae (CsMc) in fishes from 2 sites, the middle and lower reaches, of Tamjin-gang (River) in Jeollanam-do, the Republic of Korea. Total 1,132 fishes in 22 species were collected from the middle reaches in Jangheung-gun for 4 years (2014-2017) and 517 fishes in 17 species were also collected from the lower reaches in Gangjin-gun in 2014 and 2017. They were all individually examined with the artificial digestion method in our laboratory. CsMc were detected in 322 (28.5%) out of 1,132 fishes from Jangheung-gun, and in 161 (31.1%) out of 517 fishes from Gangjin-gun, and their densities were 51 and 57 per fish infected each. In the fish species with CsMc, positive rates were 61.5% in Jangheung-gun and 62.7% in Gangjin-gun. A total of 222 Pungtungia herzi were examined and they were all infected with CsMc. The average intensity was 103 CsMc in the index fish, P. herzi (95 in Jangheung-gun and 121 in Gangjin-gun). In P. herzi bimonthly examined in 2017, the intensity was commonly most higher in March in 2 surveyed sites, however the significant seasonal endemicity was not showed. Conclusively, it was confirmed that CsMc is more or less prevalent in fishes from Tamjin-gang and their endemicity is higher in fish from the lower reaches in Gangjin-gun than the middle reaches in Jangheung-gun in Jeollanam-do, Korea.
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The purpose of this study was to ascertain the status and patterns of pinworm Enterobius vermicularis infection among preschool children in Jeollanam-do from 2023 to 2025. Further, it aimed to assess changes in infection rates during the implementation of the test-and-treatment strategy. Cellophane tape swabs were collected from 12,608 children aged 0–6 years enrolled in daycare or kindergarten facilities in 8 cities and counties of Jeollanam-do. The samples were examined under a light microscope to diagnose pinworm infection. The overall infection rate over the 3-year period was 0.22% (28/12,608). The annual infection rate declined continuously from 0.35% in 2023 to 0.06% in 2025 (trend P<0.05). The infection rate did not vary significantly with sex (P>0.05), but was significantly higher in the 4–6 year age group (P<0.05), and was highest in Jangheung-gun (0.65%) and Goheung-gun (0.37%). The overall infection rate in this study was substantially lower than previously reported. However, this may represent a transient phenomenon reflecting environmental or behavioral factors associated with this specific period. Therefore, continuous monitoring is necessary.
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