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Park SM, Choi C, Rhee MS. One Health approach for prioritization of potential foodborne pathogens: Risk-ranking, Delphi survey, and criteria evaluation pre- and post-COVID-19 pandemic. Compr Rev Food Sci Food Saf 2024; 23:e13258. [PMID: 38284613 DOI: 10.1111/1541-4337.13258] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 10/02/2023] [Accepted: 10/04/2023] [Indexed: 01/30/2024]
Abstract
Frequent foodborne illnesses with unknown causative agents highlight the need to explore zoonotic potential foodborne pathogens (PFPs). An effective PFP prioritization tool is indispensable, especially after experiencing the recent pandemic caused by zoonotic SARS-CoV-2. Risk information on pathogens (excluding 30 known foodborne pathogens) provided by governmental and international organizations was reviewed to generate a list of PFPs. Risk-ranking of PFPs was conducted based on a literature review of food poisoning or detection cases, and the ranks were determined with a decision tree. PFPs were prioritized by infectious disease (ID), veterinary medicine (VET), and food safety (FS) experts through a pre- and postpandemic Delphi survey, and key criteria in their decisions were illuminated. Among 339 PFPs, 32 rank-1 PFPs were involved in the foodborne outbreak(s). Discrepancies in opinions on prioritization between experts in different fields deepened after the pandemic. Only VET and FS experts valued the plausibility of foodborne transmission in evaluating bacteria and viruses, and a significant correlation between their selection of PFPs was found (p < .05). The impact of the pandemic induced all fields to focus more on human transmission and severity/fatality in prioritizing viruses, and only FS experts emphasized the plausibility of foodborne transmission after the pandemic. In contrast to prioritizing bacteria or viruses, ID and VET experts are unusually focused on foodborne transmission when prioritizing parasites. Criteria of consensus deduced by interdisciplinary experts with different interests and the criteria directly related to foodborne transmission should be acknowledged for adequate PFP prioritization.
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Affiliation(s)
- Sun Min Park
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
| | - Changsun Choi
- Department of Food and Nutrition, College of Biotechnology and Natural Resources, Chung-Ang University, Anseong-si, Gyeonggi, Republic of Korea
| | - Min Suk Rhee
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea
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2
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Chang T, Jung BK, Hong S, Shin H, Ryoo S, Lee J, Lee KH, Park H, Eom KS, Khieu V, Huy R, Sohn WM, Chai JY. Occurrence of a Hybrid Between Taenia saginata and Taenia asiatica Tapeworms in Cambodia. THE KOREAN JOURNAL OF PARASITOLOGY 2021; 59:179-182. [PMID: 33951775 PMCID: PMC8106985 DOI: 10.3347/kjp.2021.59.2.179] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/17/2021] [Indexed: 11/23/2022]
Abstract
Human infection with Taenia asiatica or a hybrid between Taenia saginata and T. asiatica has not been reported in Cambodia. We detected for the first time a hybrid form between T. saginata and T. asiatica in Preah Vihear Province, Cambodia. An adult tapeworm specimen, i.e., 75 cm long strobila without scolex, was expelled from a 27-year-old man after praziquantel medication and purging. It was morphologically indistinguishable between T. saginata and T. asiatica. Several proglottids were molecularly analyzed to confirm the tapeworm species. The mitochondrial gene encoding cytochrome c oxidase subunit 1 (cox1) and nuclear genes encoding elongation factor-1α (ef1) and ezrin-radixin-moesin (ERM)-like protein (elp) were sequenced, and a single-allele analysis was performed to confirm the haploid genotype. The results revealed that our sample showed a discrepancy between the mitochondrial and 2 nuclear genes. It possessed homozygous sequences typical of T. saginata at cox1 and ef1 loci. However, it was heterozygous at the elp locus, with 1 allele in T. asiatica (elpA) and 1 in T. saginata (elpC), which indicates that it is a hybrid between T. saginata and T. asiatica. The present results confirmed the presence of a hybrid between T. saginata and T. asiatica in Cambodia and strongly suggest the existence of also ‘pure’ T. asiatica in Cambodia.
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Affiliation(s)
- Taehee Chang
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Sooji Hong
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Hyejoo Shin
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Seungwan Ryoo
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Jeonggyu Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Keon Hoon Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Hansol Park
- Department of Parasitology and Medical Research Institute, Chungbuk National University College of Medicine, Cheongju 28644, Korea
| | - Keeseon S Eom
- Department of Parasitology and Medical Research Institute, Chungbuk National University College of Medicine, Cheongju 28644, Korea
| | - Virak Khieu
- National Center for Parasitology, Entomology and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Rekol Huy
- National Center for Parasitology, Entomology and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea
| | - Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea.,Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080, Korea
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BIZHANI N, HASHEMI HAFSHEJANI S, MOHAMMADI N, REZAEI M, ROKNI MB. Human Cysticercosis in Asia: A Systematic Review and Meta-Analysis. IRANIAN JOURNAL OF PUBLIC HEALTH 2020; 49:1839-1847. [PMID: 33346233 PMCID: PMC7719645 DOI: 10.18502/ijph.v49i10.4683] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 10/18/2019] [Indexed: 12/17/2022]
Abstract
BACKGROUND Cysticercosis in among the neglected tropical disease caused by eating the egg of parasite Taenia solium. In this review, we aimed to verify the prevalence of human cysticercosis in different countries of Asia using systematic review and meta-analysis approach. METHODS Based of the protocol, reliable databases including PubMed, SCOPUS, Science Direct, Embase, and Cochrane Library from 1990-2018 were searched using a panel of keywords. Overall, 48 countries of Asia were searched in turn and data were analyzed using a category of statistical tests. RESULTS Out of 28 included studies, 586175 samples were collected and included in the data analysis. Based on the meta-analysis results, the overall pooled percent of cysticercosis was estimated 3.8% (95% CI: [2.0, 7.0]). According to the result of heterogeneity statistics including I-squared, chi-square, and tau-squared, it was statistically significant (Tau2 = 2.94, chi2 = 12733.31, P<0.001, I2 = 100%) therefore a random effect model was used to handle the heterogeneity of studies. To evaluate the trend of cysticercosis over the time, Cumulative meta-analysis was performed and the result showed that there was a minor upward tendency in the prevalence of cysticercosis over the time. CONCLUSION Although, considering the religious culture and food habits in Asia, we might have expected to witness a low prevalence of human cysticercosis, but we noticed more or less significant infection in some countries of the region. Regarding the new feature of immigration and travel between countries, all authorities are advised to take measures on controlling and monitoring the disease.
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Affiliation(s)
- Negar BIZHANI
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Saeideh HASHEMI HAFSHEJANI
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Neda MOHAMMADI
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi REZAEI
- Department of Forestry and Landscape Architecture, Konkuk University, Seoul, Republic of Korea
| | - Mohammad Bagher ROKNI
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Chang T, Jung BK, Sohn WM, Hong S, Shin H, Ryoo S, Lee J, Lee KH, Khieu V, Huy R, Chai JY. Molecular Diagnosis of Taenia saginata Tapeworms from Two Residents of Northern Cambodia. THE KOREAN JOURNAL OF PARASITOLOGY 2020; 58:201-204. [PMID: 32418391 PMCID: PMC7231828 DOI: 10.3347/kjp.2020.58.2.201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 04/07/2020] [Indexed: 11/25/2022]
Abstract
Taenia saginata infection has seldom been reported in Cambodia. In this study, we performed a survey of intestinal parasites in 1,156 residents of Preah Vihear and Stung Treng Provinces in 2018. The results revealed that 26 (2.4%) cases were positive for Taenia spp. eggs. In order to obtain the strobilae of the tapeworms, 2 patients in Preah Vihear were treated with praziquantel and purged with magnesium salts. The proglottids expelled after the medication were morphologically and molecularly analyzed to determine the species. The main uterine lateral braches in gravid proglottids were >15 in number suggesting that they are either T. saginata or Taenia asiatica. The sequences of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene and 2 nuclear loci, elongation factor-1 alpha (ef1) and ezrin-radixin-moesin-like protein (elp), were identical to the sequences of T. saginata available in GenBank but distant from Taenia solium, T. asiatica, and T. saginata-T. asiatica hybrid. This is the first report of the presence of T. saginata in the northern part of Cambodia bordering Lao PDR based on a molecular confirmation.
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Affiliation(s)
- Taehee Chang
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Woon-Mok Sohn
- Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea
| | - Sooji Hong
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Hyejoo Shin
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Seungwan Ryoo
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Jeonggyu Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Keon Hoon Lee
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Virak Khieu
- National Center for Parasitology, Entomology and Malaria Control, Phnom Penh, Cambodia
| | - Rekol Huy
- National Center for Parasitology, Entomology and Malaria Control, Phnom Penh, Cambodia
| | - Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea.,Department of Tropical Medicine and Parasitology, Seoul National University College of Medicine, Seoul 03080, Korea
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5
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Eom KS, Rim HJ, Jeon HK. Taenia asiatica: Historical overview of taeniasis and cysticercosis with molecular characterization. ADVANCES IN PARASITOLOGY 2020; 108:133-173. [PMID: 32291084 DOI: 10.1016/bs.apar.2019.12.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Asian Taenia is a human-infecting Taenia tapeworm known as Taenia asiatica following morphological examination of adult and larval stages of the tapeworm by Eom and Rim (1993). The life cycle of T. asiatica differs from that of T. saginata in its intermediate host (pigs versus cattle) as well as in the infected organs (liver versus muscle). T. asiatica can be differentiated from T. solium and T. saginata by examination of morphological characteristics such as the scolex, mature and gravid proglottids in the adult stage, and the scolex and bladder surface in the larval stage. T. asiatica has been identified in Korea, Taiwan, the Philippines, China, Thailand, Indonesia, Vietnam, Japan, Lao PDR, Nepal and India. The molecular tools employed for T. asiatica identification have been developed to differentiate T. asiatica from other human-infecting Taenia tapeworms based on genetic information such as nucleotide sequence of mitochondrial genes, nuclear ribosomal genes and nuclear genes that lead to development of the subsequent molecular techniques, such as PCR-RFLP, PCR-RAPD, BESST-base, LAMP and qPCR. Investigation of the phylogenetic relationships among human Taenia species revealed that T. asiatica is a sister species with T. saginata, which is genetically more similar than other Taenia species in terms of the nucleotide sequences of cox1, nad1 and 28S rDNA. The mitochondrial genomes of human Taenia tapeworms comprise 13,703bp (T. asiatica), 13,670bp (T. saginata) and 13,709bp (T. solium), and contain 36 genes including 12 protein-coding genes, 2 ribosomal RNAs (rRNAs, a small and a large subunit), and 22 transfer RNAs (tRNAs). Sequence differences in the full genome of T. asiatica and T. saginata mitochondria is 4.6%, while T. solium differs by 11%. Hox gene orthology in T. asiatica was established by comparative analysis with Platyhelminthes Hox genes. T. asiatica Hox revealed six Hox orthologs including two lab/Hox1, two Hox3, one Dfd/Hox4 and one Lox/Lox4. Hybridization between T. asiatica and T. saginata was definitely observed in these species which are sympatrically endemic in the regions of Korea, Thailand, China and Lao PDR. Comparative analyses of T. asiatica, T. saginata and T. solium genomes were also reported with genome features. Taenia asiaticus nomen novum was proposed for T. asiaticaEom and Rim, 1993 which is a homonym of T. asiatica Linstow, 1901 (Davaineidae).
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Affiliation(s)
- Keeseon S Eom
- Department of Parasitology, Parasite Research Center and Parasite Resource Bank, Chungbuk National University School of Medicine, Cheongju, South Korea.
| | - Han-Jong Rim
- Department of Parasitology, Korea University College of Medicine, Seoul, South Korea
| | - Hyeong-Kyu Jeon
- Department of Parasitology, Parasite Research Center and Parasite Resource Bank, Chungbuk National University School of Medicine, Cheongju, South Korea
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Ito A, Li T, Wandra T, Dekumyoy P, Yanagida T, Okamoto M, Budke CM. Taeniasis and cysticercosis in Asia: A review with emphasis on molecular approaches and local lifestyles. Acta Trop 2019; 198:105075. [PMID: 31295430 DOI: 10.1016/j.actatropica.2019.105075] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/14/2019] [Accepted: 07/05/2019] [Indexed: 02/07/2023]
Abstract
Taeniasis is an important parasitic condition in Asia, especially since all three human-infecting Taenia spp., Taenia solium, Taenia saginata, and Taenia asiatica are found in this region. These three species are believed to be sympatrically distributed, with the largest disease burden found in remote and rural areas where people raise pigs and cattle in a traditional manner. Recent studies revealed that T. asiatica and T. saginata are genetically-related sister species that are not completely reproductively isolated from each other. Current evidence indicates that most T. asiatica adult worms are hybrid-derived descendants. Moving forward, nuclear DNA analysis will be critical in further assessing the species circulating locally. Lifestyle choices, such as the consumption of undercooked meat, are important in maintaining the life cycles of these parasites. In addition, poor hygiene and sanitation, in highly endemic areas, make disease control difficult, resulting in the need for sustainable education programs. An overview of the present situation of taeniasis and cysticercosis in Asia is provided, followed by a discussion of molecular approaches to species assessment and the impact of human lifestyles on parasite transmission.
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Affiliation(s)
- Akira Ito
- Department of Parasitology and Laboratory of NTDs, Asahikawa Medical University, Asahikawa, Japan.
| | - Tiaoying Li
- Institute of Parasitic Diseases, Sichuan Centers for Disease Control and Prevention, Chengdu, People's Republic of China
| | - Toni Wandra
- Directorate of Postgraduate, Sari Mutiara Indonesia University, Medan, Indonesia
| | - Paron Dekumyoy
- Department of Helminthology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Tetsuya Yanagida
- Laboratory of Veterinary Parasitology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munehiro Okamoto
- Center for Human Evolution Modeling Research, Primate Research Institute, Kyoto University, Inuyama, Japan
| | - Christine M Budke
- Department of Veterinary Integrative Biosciences, College of Veterinary Medicine & Biomedical Sciences, Texas A & M University, College Station, Texas, USA
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Song SM, Yun HS, VanBik D, Chang HH, Lee SA, Kim SW, Ryoo N, Eun DY, Lee NY, Goo YK, Hong Y, Ock M, Cha HJ, Chung DI. Ten Cases of Taenia saginata Infection Confirmed by Analysis of the Internal Transcribed Spacer 1 rDNA Region in the Republic of Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2019; 57:417-422. [PMID: 31533409 PMCID: PMC6753295 DOI: 10.3347/kjp.2019.57.4.417] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/15/2019] [Indexed: 11/24/2022]
Abstract
From October 2015 to August 2018, tapeworm proglottids were obtained from 10 patients who were residents of Daegu and Gyeongbuk provinces and had a history of raw beef consumption. Most of them had no overseas travel experience. The gravid proglottids obtained from the 10 cases had 15–20 lateral uterine branches. A part of internal transcribed spacer 1 (ITS1) DNA of the 10 cases, amplified by polymerase chain reaction (PCR) and digested with AleI restriction enzyme, produced the same band pattern of Taenia saginata, which differentiated from T. asiatica and T. solium. Sequences of ITS1 and cytochrome c oxidase subunit 1 (cox1) showed higher homology to T. saginata than to T. asiatica and T. solium. Collectively, these 10 cases were identified as T. saginata human infections. As taeniasis is one of the important parasitic diseases in humans, it is necessary to maintain hygienic conditions during livestock farming to avoid public health concerns.
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Affiliation(s)
- Su-Min Song
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea.,Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Korea
| | - Hae Soo Yun
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Dorene VanBik
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Hyun-Ha Chang
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Sang-Ah Lee
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Shin-Woo Kim
- Department of Internal Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Namhee Ryoo
- Department of Laboratory Medicine Keimyung University School of Medicine, Dongsan Medical Center, Daegu 41931, Korea
| | - Dong Yeub Eun
- Dr. Eun's Internal Medicine Clinic, Daegu 42688, Korea
| | - Nan Young Lee
- Sangju Red Cross Hospital, Department of laboratory Medicine, Daegu 37199, Korea
| | - Youn-Kyoung Goo
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Yeonchul Hong
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
| | - Meesun Ock
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Korea
| | - Dong-Il Chung
- Department of Parasitology and Tropical Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea
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Son HJ, Kim MJ, Jung KH, Choi S, Jung J, Chong YP, Kim SH, Lee SO, Choi SH, Kim YS, Woo JH, Jung BK, Song H, Chai JY. Neurocysticercosis: Clinical Characteristics and Changes from 26 Years of Experience in an University Hospital in Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2019; 57:265-271. [PMID: 31284349 PMCID: PMC6616162 DOI: 10.3347/kjp.2019.57.3.265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Accepted: 05/10/2019] [Indexed: 11/24/2022]
Abstract
The prevalence of human taeniasis has decreased in Korea. The stool egg positive proportion decreased from 1.9% in 1971 to 0% in 2004 in nationwide surveys. The neurocysticercosis (NCC) is also presumed to decrease. However, detailed information regarding the recent status of NCC in Korea is lacking. We retrospectively reviewed NCC cases from 1990 to 2016 at Asan Medical Center, a 2700-bed tertiary referral hospital in Korea. We identified patients based on clinical symptoms, brain imaging, pathology and serological assay. The cases were classified as parenchymal, extraparenchymal, and mixed NCC. Eighty-one patients were included in the analysis. The mean age was 54.5 years, and 79.0% were male. The number of NCC cases was highest from 1995 to 1999, and continuously decreased thereafter. Forty (49.4%) patients had parenchymal NCC, while 25 (30.9%) patients had extraparenchymal NCC, and 16 (19.8%) patients had mixed NCC. The seizure and headache were most common symptom of parenchymal NCC and extraparenchymal NCC respectively. Hydrocephalus was more common in extraparenchymal NCC, and patients with extraparenchymal NCC were more likely to require a ventriculoperitoneal shunt. Cases of NCC are decreasing accordingly with human taeniasis and lesion location was the most important determinant of clinical presentation and outcome of NCC in Korea.
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Affiliation(s)
- Hyo-Ju Son
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Min Jae Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Kyung Hwa Jung
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Sungim Choi
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jiwon Jung
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Yong Pil Chong
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Sung-Han Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Sang-Oh Lee
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Sang-Ho Choi
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Yang Soo Kim
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Jun Hee Woo
- Department of Infectious Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 05505, Korea
| | - Bong-Kwang Jung
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Hyemi Song
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
| | - Jong-Yil Chai
- Institute of Parasitic Diseases, Korea Association of Health Promotion, Seoul 07649, Korea
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9
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Won EJ, Shin JH, Lee YJ, Kim MJ, Kang SJ, Jung SI, Kim SH, Shin JH, Chai JY, Shin SS. Four Taeniasis saginata Cases Diagnosed at a University Hospital in Korea. THE KOREAN JOURNAL OF PARASITOLOGY 2019; 57:313-318. [PMID: 31284357 PMCID: PMC6616169 DOI: 10.3347/kjp.2019.57.3.313] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 05/23/2019] [Indexed: 11/23/2022]
Abstract
In recent years, the taeniasis has been rarely reported in the Republic of Korea (Korea). But in this study, we intend to report 4 taeniasis cases caused by Taenia saginata during a 5-month period (February to June 2018) at a unversity hospital in Gwangju, Korea. Worm samples (proglottids) discharged from all cases were identified by phenotypic and molecular diagnostics. Mitochondrial cytochrome c oxidase subunit I sequences showed 99.4–99.9% identity with T. saginata but, differed by 4% from T. asiatica and by 7% from T. multiceps, respectively. We found that tapeworms in 2 cases (Cases 2 and 3) yielded exactly the same sequences between them, which differed from those in Cases 1 and 4, suggesting intra-species variation in tapeworms. These taeniasis cases by T. saginata infection in this study, which occurred within a limited time period and region, suggest the possibility of a mini-outbreak. This study highlights the need for further epidemiological investigation of potentially overlooked cases of T. saginata infection in Korea.
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Affiliation(s)
- Eun Jeong Won
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju 61469, Korea
| | - Ju Hyeon Shin
- Department of Laboratory Medicine, Chonnam National University Hospital, Gwangju 61469, Korea
| | - Yu Jeong Lee
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju 61469, Korea
| | - Moon-Ju Kim
- Department of Parasitology and Tropical Medicine, Chonnam National University Medical School, Gwangju 61469, Korea
| | - Seung Ji Kang
- Department of Infectious Diseases, Chonnam National University Medical School, Gwangju 61469, Korea
| | - Sook In Jung
- Department of Infectious Diseases, Chonnam National University Medical School, Gwangju 61469, Korea
| | - Soo Hyun Kim
- Department of Laboratory Medicine, Chonnam National University Hospital, Gwangju 61469, Korea
| | - Jong Hee Shin
- Department of Laboratory Medicine, Chonnam National University Hospital, Gwangju 61469, Korea
| | - Jong-Yil Chai
- Korea Association of Health Promotion, Seoul 07549, and Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Sung-Shik Shin
- Department of Parasitology, College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
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Won EJ, Jung BK, Song H, Kim MS, Kim HS, Lee KH, Kim MJ, Shin MG, Shin JH, Suh SP, Hong SJ, Sohn WM, Htoon TT, Tin HH, Chai JY. Molecular Diagnosis of Taenia saginata Tapeworm Infection in 2 Schoolchildren, Myanmar. Emerg Infect Dis 2019; 24:1156-1158. [PMID: 29774855 PMCID: PMC6004857 DOI: 10.3201/eid2406.180217] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Taenia saginata is the most common human tapeworm worldwide but has been unknown in Myanmar. In 2017, fecal examination in Yangon, Myanmar, revealed eggs of Taenia species in 2 children from a monastic school. Several proglottids expelled after medication with praziquantel were morphologically and molecularly confirmed to be T. saginata tapeworms.
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11
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A co-infection case report of Taenia saginata in a patient with subclinical clonorchiasis confirmed by the combination of diagnostic tools. BMC Infect Dis 2019; 19:115. [PMID: 30727977 PMCID: PMC6364428 DOI: 10.1186/s12879-019-3758-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2018] [Accepted: 01/29/2019] [Indexed: 11/16/2022] Open
Abstract
Background Clonorchiasis is the common parasitic infection in the general population of the Republic of Korea, however, taeniasis is scarcely reported recently. Here, we describe a case of co-infection with the cestode T. saginata in a patient with subclinical clonorchiasis diagnosed by a combination of diagnostic tools in Korea. Case presentation A 56-year-old man visited the hospital having passed proglottids in his stool for the past two months and brought a stool sample with segments to our hospital. He had no abdominal symptoms, such as nausea, vomiting, abdominal pain, diarrhea, or constipation. He used to consume raw beef and fish frequently. We could not find evidence of gravid proglottids which contain fully developed uteri filled with ova or branched uterine structures, within the submitted sample. To identify the tapeworm species, we carried out molecular analyses on the proglottids. The cox1 and ef1a sequences had a 100% match with those of T. saginata and differed from the sequences of the other Taenia species. Upon examination of stool samples fixed by formalin-ether concentration method, no Taenia species ova were observed in 10 slides. Instead, C. sinensis ova were observed, despite the level of IgG specific to C. sinensis being within the normal range. The patient was treated with praziquantel (25 mg/kg, three times a day) for 3 days, and subsequently C. sinensis ova were not found in his stool. Conclusion Our case indicates that a combination of morphological, serological, and molecular diagnostic tools should be used for the accurate diagnosis of subclinical parasitic infections. Electronic supplementary material The online version of this article (10.1186/s12879-019-3758-0) contains supplementary material, which is available to authorized users.
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Braae UC, Hung NM, Satrija F, Khieu V, Zhou XN, Willingham AL. Porcine cysticercosis (Taenia solium and Taenia asiatica): mapping occurrence and areas potentially at risk in East and Southeast Asia. Parasit Vectors 2018; 11:613. [PMID: 30497522 PMCID: PMC6267083 DOI: 10.1186/s13071-018-3203-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/19/2018] [Indexed: 11/10/2022] Open
Abstract
Background Due to the relative short life span and the limited spatial movement, porcine cysticercosis is an excellent indicator of current local active transmission. The aim of this study was to map at province-level, the occurrence of T. solium and T. asiatica in pigs and areas at risk of transmission to pigs in East and Southeast Asia, based on the density of extensive pig production systems and confirmed reports of porcine cysticercosis. Methods This study covered East and Southeast Asia, which consist of the following countries: Brunei, Cambodia, China, East Timor, Indonesia, Japan, Laos, Malaysia, Mongolia, Myanmar, North Korea, Philippines, Singapore, South Korea, Thailand and Vietnam. Literature searches were carried out to identify current epidemiological data on the occurrence of porcine cysticercosis caused by T. solium and T. asiatica infections. Modelled densities of pigs in extensive production systems were mapped and compared to available data on porcine cysticercosis. Results Porcine cysticercosis was confirmed to be present during the period 2000 to 2018 in eight out of the 16 countries included in this study. Taenia solium porcine cysticercosis was confirmed from all eight countries, whereas only one country (Laos) could confirm the presence of T. asiatica porcine cysticercosis. Province-level occurrence was identified in five countries (Cambodia, Indonesia, Laos, Myanmar, and Vietnam) across 19 provinces. Smallholder pig keeping is believed to be widely distributed throughout the region, with greater densities predicted to occur in areas of China, Myanmar, Philippines and Vietnam. Conclusions The discrepancies between countries reporting taeniosis and the occurrence of porcine cysticercosis, both for T. solium and T. asiatica, suggests that both parasites are underreported. More epidemiological surveys are needed to determine the societal burden of both parasites. This study highlights a straightforward approach to determine areas at risk of porcine cysticercosis in the absence of prevalence data. Electronic supplementary material The online version of this article (10.1186/s13071-018-3203-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Uffe Christian Braae
- One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis.
| | - Nguyen Manh Hung
- Department of Parasitology, Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hanoi, Vietnam
| | - Fadjar Satrija
- Department of Animal Infectious Diseases, Faculty of Veterinary Medicine, Bogor Agricultural University, Bogor, Indonesia
| | - Virak Khieu
- National Center for Parasitology, Entomology and Malaria Control, Ministry of Health, Phnom Penh, Cambodia
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, China CDC, Shanghai, China
| | - Arve Lee Willingham
- One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, Saint Kitts and Nevis
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Wu HW, Ito A, Ai L, Zhou XN, Acosta LP, Lee Willingham A. Cysticercosis/taeniasis endemicity in Southeast Asia: Current status and control measures. Acta Trop 2017; 165:121-132. [PMID: 26802488 DOI: 10.1016/j.actatropica.2016.01.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Revised: 11/02/2015] [Accepted: 01/10/2016] [Indexed: 12/26/2022]
Abstract
The parasitic zoonoses cysticercosis/taeniasis is among the 17 major Neglected Tropical Diseases (NTDs) identified by the WHO as a focus for research and control. It is caused by a larval stage (cysticercus) infection of Taenia solium tapeworm in both humans and pigs. Cysticercosis occurs in many resource-poor countries, especially those with warm and mild climates in the regions of Latin America (LA), Asia and Sub-Saharan Africa (SSA). The prevalence of human cysticercosis is marked in those areas where individuals are traditionally keen to consume raw or insufficiently cooked pork and/or where the husbandry of pigs is improper. The worldwide burden of cysticercosis is unclear and notably, large-scale control initiatives are lacking in all regions. This review focuses on the current endemic status of cysticercosis caused by T. solium infection in both humans and pigs living in 13 Southeast Asian countries. We will also emphasize epidemiological data as well as prevention and control of human neurocysticercosis.
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Affiliation(s)
- Hai-Wei Wu
- Center for International Health Research, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA; Department of Pediatrics, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA.
| | - Akira Ito
- Department of Parasitology and Neglected Tropical Diseases Research Laboratory, Asahikawa Medical University, Asahikawa, Japan
| | - Lin Ai
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Xiao-Nong Zhou
- National Institute of Parasitic Diseases, Chinese Center for Disease Control and Prevention, Shanghai, People's Republic of China
| | - Luz P Acosta
- Department of Immunology, Research Institute for Tropical Medicine, Alabang, Muntinlupa, Philippines
| | - Arve Lee Willingham
- One Health Center for Zoonoses and Tropical Veterinary Medicine, Ross University School of Veterinary Medicine, Basseterre, St. Kitts, West Indies
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Cho J, Jung BK, Lim H, Kim MJ, Yooyen T, Lee D, Eom KS, Shin EH, Chai JY. Four cases of Taenia saginata infection with an analysis of COX1 gene. THE KOREAN JOURNAL OF PARASITOLOGY 2014; 52:79-83. [PMID: 24623887 PMCID: PMC3948999 DOI: 10.3347/kjp.2014.52.1.79] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 11/23/2022]
Abstract
Human taeniases had been not uncommon in the Republic of Korea (=Korea) until the 1980s. The prevalence decreased and a national survey in 2004 revealed no Taenia egg positive cases. However, a subsequent national survey in 2012 showed 0.04% (10 cases) prevalence of Taenia spp. eggs suggesting its resurgence in Korea. We recently encountered 4 cases of Taenia saginata infection who had symptoms of taeniasis that included discharge of proglottids. We obtained several proglottids from each case. Because the morphological features of T. saginata are almost indistinguishable from those of Taenia asiatica, molecular analyses using the PCR-RFLP and DNA sequencing of the cytochrome c oxidase subunit 1 (cox1) were performed to identify the species. The PCR-RFLP patterns of all of the 4 specimens were consistent with T. saginata, and the cox1 gene sequence showed 99.8-100% identity with that of T. saginata reported previously from Korea, Japan, China, and Cambodia. All of the 4 patients had the history of travel abroad but its relation with contracting taeniasis was unclear. Our findings may suggest resurgence of T. saginata infection among people in Korea.
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Affiliation(s)
- Jaeeun Cho
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - Bong-Kwang Jung
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - Hyemi Lim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - Min-Jae Kim
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea. ; Department of Internal Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea
| | - Thanapon Yooyen
- Department of Biology, Faculty of Science, Thaksin University, Phatthalung 93110, Thailand
| | - Dongmin Lee
- Department of Parasitology, Medical Research Institute and Parasite Resource Bank, Chungbuk National University School of Medicine, Cheongju 361-763, Korea
| | - Keeseon S Eom
- Department of Parasitology, Medical Research Institute and Parasite Resource Bank, Chungbuk National University School of Medicine, Cheongju 361-763, Korea
| | - Eun-Hee Shin
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea. ; Seoul National University Bundang Hospital, Seongnam 463-707, Korea
| | - Jong-Yil Chai
- Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea
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Ale A, Victor B, Praet N, Gabriël S, Speybroeck N, Dorny P, Devleesschauwer B. Epidemiology and genetic diversity of Taenia asiatica: a systematic review. Parasit Vectors 2014; 7:45. [PMID: 24450957 PMCID: PMC3900737 DOI: 10.1186/1756-3305-7-45] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2013] [Accepted: 01/08/2014] [Indexed: 11/10/2022] Open
Abstract
Taenia asiatica has made a remarkable journey through the scientific literature of the past 50 years, starting with the paradoxical observation of high prevalences of T. saginata-like tapeworms in non-beef consuming populations, to the full description of its mitochondrial genome. Experimental studies conducted in the 1980s and 1990s have made it clear that the life cycle of T. asiatica is comparable to that of T. saginata, except for pigs being the preferential intermediate host and liver the preferential location of the cysts. Whether or not T. asiatica can cause human cysticercosis, as is the case for Taenia solium, remains unclear. Given the specific conditions needed to complete its life cycle, in particular the consumption of raw or poorly cooked pig liver, the transmission of T. asiatica shows an important ethno-geographical association. So far, T. asiatica has been identified in Taiwan, South Korea, Indonesia, the Philippines, Thailand, south-central China, Vietnam, Japan and Nepal. Especially this last observation indicates that its distribution is not restricted to South-East-Asia, as was thought so far. Indeed, the molecular tools developed over the last 20 years have made it increasingly possible to differentiate T. asiatica from other taeniids. Such tools also indicated that T. asiatica is related more closely to T. saginata than to T. solium, feeding the debate on its taxonomic status as a separate species versus a subspecies of T. saginata. Furthermore, the genetic diversity within T. asiatica appears to be very minimal, indicating that this parasite may be on the verge of extinction. However, recent studies have identified potential hybrids between T. asiatica and T. saginata, reopening the debate on the genetic diversity of T. asiatica and its status as a separate species.
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Affiliation(s)
| | | | | | | | | | | | - Brecht Devleesschauwer
- Institute of Health and Society (IRSS), Université catholique de Louvain, Brussels, Belgium.
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