Heterophyid trematodes recovered from people residing along the Boseong River, South Korea

Chai, Jong Yil; Jung, Byung Mun; Kim, Deok Gyu; Kim, Jae Lip; Lim, Hyemi; Shin, Eun Hee; Lee, Keon Hoon; Kim, Mok Ryeon; Han, S; Yeom, Jae Hyun; Park, Sun Mi; Hwang, Jae Sun

doi:10.1016/j.actatropica.2015.04.025

Cited by 14 publications

(7 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, fecal examination, especially Kato-Katz, has been widely used in mass examinations in South Korea ( Korea Centers for Disease Control and Prevention and Korea National Institute of Health, 2013; Jeong et al, 2016 ), but it is difficult for inexperienced researchers to identify the eggs of C. sinensis, Metagonimus yokogawai, Metagonimus miyatai , and Metagonimus takahashii by microbiological methods alone without using molecular diagnostic methods such as PCR ( Jeon et al, 2012; Xu et al, 2019 ). The high prevalence of C. sinensis infection in Hadong-gun and Gokseong-gun, two countys with high prevalence of M. yokogawai infection previously ( Bahk et al, 2018; Chai et al, 2015; Kim et al, 1979 ), may be caused by the absence of differential diagnosis. In addition, as seven surveys only reported the intervals of prevalence instead of the exact observed values, there may be a potential bias resulted from assigning the midpoint values of the intervals as observations ( Korea Centers for Disease Control and Prevention and Korea National Institute of Health, 2013; Cho et al, 2016; Ju et al, 2005 ).…”

Section: Discussionmentioning

confidence: 97%

The spatial-temporal risk profiling of Clonorchis sinensis infection in South Korea: A geostatistical modeling study

Xiao

Chai

Fang

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

Clonorchiasis is one of the major parasitic diseases in South Korea. Spatially explicit estimates of the infection risk are important for control and intervention. We did a systematic review of collected prevalence data on Clonorchis sinensis infection in South Korea. Data of potential influencing factors (e.g., environmental and social-economic factors) was obtained from open-access databases. Bivariate Bayesian geostatistical joint modeling approaches were applied to analyze disease data, within a logit regression in combination of potential influencing factors and spatial-temporal random effects. We identified surveys of C. sinensis infection done at 1362 unique locations, and presented the first spatial-temporal risk maps at high spatial resolution (5×5km) in South Korea. High infection risk areas shrunk significantly from 1970 to 2017. The overall risk decreased since the start of the national deworming program in 1969, and then slightly increased since the year 1995 when the program suspended, and maintained stable since 2005 when the Clonorchiasis Eradication Program begun. The population-weighted prevalence was estimated as 3.87% (95% BCI: 3.04-4.82%) in 2017, accounting to 1.92 (95% BCI: 1.51-2.40) million infected people. Although the prevalence over the country has been low, C. sinensis infection was still endemic in areas of eastern and southern regions, particularly the five major river basins. We also defined factors significantly correlated, such as, distance to the nearest open water bodies, annual precipitation, and land surface temperature at night. All findings above provide important information on spatial-targeting control and preventive strategies of C. sinensis infection in South Korea.

show abstract

Section: Discussionmentioning

confidence: 97%

The spatial-temporal risk profiling of Clonorchis sinensis infection in South Korea: A geostatistical modeling study

Xiao

Chai

Fang

et al. 2022

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…The infection status with MsMc in fishes from Seomjin-gang and Tamjin-gang was also recorded [ 51 ]. The riverside areas of Seomjin-gang and Tamjin-gang has been known as the endemic areas of heterophyid flukes including M. yokogawai [ 52 – 56 ]. Sohn et al [ 57 , 58 ] reported the infection status of ZTM in fish from Geum-gang and of DTM in fish from coastal lakes in Gangwon-do.…”

Section: Background and Purposementioning

confidence: 99%

Infection characteristics of Metagonimus species (Digenea: Heterophyidae) metacercariae in fish from major rivers of Korea

Sohn

2024

Parasites Hosts Dis

View full text Add to dashboard Cite

This article analyzed the infection characteristics of metacercariae of Metagonimus spp. (MsMc) in fish from 9 major water systems in Korea. A total of 19,568 fish in 87 species were examined over a period of 10 years (2011–2020). MsMc were detected in fish from all 44 survey areas in 9 water systems. Most of the surveyed sites showed very low and low infection levels (66.7%), while 33.3% of the areas, such as Tamjin-gang and Seomjin-gang, revealed moderate and high infection levels. High endemicity depends on the abundance of susceptible fish species, especially sweet smelt (Plecoglosus altivelis). The susceptibility index (SI) with MsMc in index fish, Zacco spp., was very low and low levels in 62.0%, moderate in 28.0%, and high in 10.0% regions. The SI was highest in the following order: Yeongam-cheon (283.8), Hoeng-cheon (192.3), Togyo-jeosuji (131.2), Deokcheon-gang (119.1), and Joyang-gang (106.3). The recent infection status of MsMc in P. altivelis was analyzed by the survey localities. In addition, except for P. altivelis, 9 fish species were highly infected with MsMc in some survey areas, including Zacco platypus, Z. koreanus, Z. temminckii, Opsariichthys uncirostris, Rhynchocypris oxycephalus, Carassius auratus, Acheilognathus rhombeus, Onchorhynchus masou, and Tribolodon hakonensis. In Korea, 74 fish species (15 families) are collectively listed as second intermediate hosts of Metagonimus spp. This review provides several novel characteristics of MsMc infection and clarifies the fish species of second intermediate host of Metagonimus spp. in this country.

show abstract

“…Moreover, Mahanty and John (2011 ) reported 42% of the Korean population infected with H. heterophyes. In South Korea, Chai et al (2015 ) found 23.3% of people infected with heterophyid fluke, 23% with H. nocens and 3% with H. continua ( Onji & Nishio, 1916). Furtheremore, 21% of schoolchildren, in Sakon Nakhon Province, in Thailand, were reported to be infected with H. heterophyes ( Doi et al, 2017 ).…”

Section: Heterophyesmentioning

confidence: 99%

“…Heterophyiasis, an intestinal parasitic disease caused by the trematode fluke Heterophyes heterophyes (Siebold, 1852) and other heterophyids, is considered as a zoonotic problem in several countries (Well and Blagg, 1956;Kuntz et al, 1958;Nagaty and Khalil, 1964;Moravec, 1977;Sheir and Abou-El Enein, 1979;Seo et al, 1980, Massoud et al, 1981Park et al, 2007;Chai et al, 2015;Doi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

“…Heterophyiasis, an intestinal parasitic disease, caused by the infection with Heterophyes heterophyes and other heterophids, is considered as a zoonotic problem in some areas of Egypt (Mohamed et al, 2010). Also, in several countries, heterophyiasis is found to be endemic (Chai et al, 2004;Park et al, 2007;Mahanty and John, 2011;Chai et al, 2015;Traub and Dalsgaard, 2016;Doi et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Untitled

2019

IRJPEH

View full text Add to dashboard Cite

Examination of 452 fresh and brackish water fish, from Cairo district, Egypt, representing Clarias gariepinus, Lebeo noliticus and Mugil cephalus, revealed the occurrence of nine species of encysted metacercariae in Cl. gariepinus, belonging to family Heterophyidae, two unidentified digenean metacercariae in L. niloticus and two unidentified digenean metacercariae in M. cephalus. The relationship between parasite prevalence and fish species, seasonal prevalence and fish weight was investigated. The highest rate of infection (73.68%) was recorded in autumn, in Cl. gariepinus, while the lowest (54.05%) was observed in summer. Whereas, in M. cephalus and L. noliticus, the highest prevalence of infection (56.67 and 26.09%, respectively), was recorded, in spring. But, in M. cephalus the lowest infection rate (25.82%) was detected in winter, while in L. niloticus (12.50%), it was recorded in autumn. The intensity of infection in Cl. gariepinus increased with fish weight till 150g while, it decreased in fish weighing more than 200g. Similarly, in M. cephalus, the infection rate increased with increase of fish weight till 100g, but was lower in larger fish. In L. niloticus, there was no relationship between rate of infection and fish weight; the highest intensity of infection was recorded in fish weighing 100-150g. The identification of metacercariae was assessed by feeding experimentally two dogs with flesh of Cl. gariepinus, containing encysted metacercariae and the recovery of flukes from their intestines. The impact of infection of humans and animals is discussed.

show abstract

Heterophyid trematodes recovered from people residing along the Boseong River, South Korea

Cited by 14 publications

References 22 publications

The spatial-temporal risk profiling of Clonorchis sinensis infection in South Korea: A geostatistical modeling study

The spatial-temporal risk profiling of Clonorchis sinensis infection in South Korea: A geostatistical modeling study

Infection characteristics of Metagonimus species (Digenea: Heterophyidae) metacercariae in fish from major rivers of Korea

Untitled

Contact Info

Product

Resources

About