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Article ; Online: Levels of Indicator Bacteria and Characteristics of Foodborne Pathogens from Carcasses of Cattle Slaughterhouses in Korea.

Hong, Serim / Moon, Jin-San / Yoon, Soon-Seek / Kim, Ha-Young / Lee, Young Ju

2024 Volume 87, Issue 3, Page(s) 100220

Abstract: The initial microbial contamination of carcasses during slaughtering adversely affects spoilage and shelf life and is of global concern for food safety and meat quality. This study evaluated the hygiene and quality using the prevalence of foodborne ... ...

Abstract	The initial microbial contamination of carcasses during slaughtering adversely affects spoilage and shelf life and is of global concern for food safety and meat quality. This study evaluated the hygiene and quality using the prevalence of foodborne pathogens and the level of indicator bacteria on 200 carcasses, collecting 10 from each of 20 cattle slaughterhouses in Korea. The distribution of aerobic bacterial count in carcasses was significantly highest at 2.0-3.0 log
MeSH term(s)	Cattle ; Animals ; Escherichia coli ; Abattoirs ; Meat/microbiology ; Listeria monocytogenes ; Salmonella enterica ; Republic of Korea ; Salmonella
Language	English
Publishing date	2024-01-11
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	243284-5
ISSN	1944-9097 ; 0362-028X
ISSN (online)	1944-9097
ISSN	0362-028X
DOI	10.1016/j.jfp.2024.100220
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Article ; Online: Genetic and Phenotypic Diversity of

Hong, Serim / Moon, Jin-San / Yoon, Soon-Seek / Kim, Ha-Young / Lee, Young Ju

Foodborne pathogens and disease

2023 Volume 21, Issue 1, Page(s) 1–9

Abstract: ... Listeria ... ...

Abstract	Listeria monocytogenes
MeSH term(s)	Animals ; Swine ; Humans ; Listeria monocytogenes/genetics ; Abattoirs ; Listeriosis/epidemiology ; Oxacillin ; Republic of Korea/epidemiology ; Food Microbiology
Chemical Substances	Oxacillin (UH95VD7V76)
Language	English
Publishing date	2023-10-10
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't ; Comment
ZDB-ID	2148479-X
ISSN	1556-7125 ; 1535-3141
ISSN (online)	1556-7125
ISSN	1535-3141
DOI	10.1089/fpd.2023.0053
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Article ; Online: Complete genome sequence of a ciprofloxacin-resistant Salmonella Kentucky ST198 strain from a chicken carcass in South Korea.

Moon, Dong Chan / Yoon, Soon-Seek / Lim, Suk-Kyung

Journal of global antimicrobial resistance

2021 Volume 24, Page(s) 373–375

Abstract: Objectives: Human infection by ciprofloxacin-resistant Salmonella enterica serovar Kentucky sequence type 198 (ST198) has been reported in the USA, Europe and Korea. In this study, we report the complete genome sequence of the first Salmonella Kentucky ... ...

Abstract	Objectives: Human infection by ciprofloxacin-resistant Salmonella enterica serovar Kentucky sequence type 198 (ST198) has been reported in the USA, Europe and Korea. In this study, we report the complete genome sequence of the first Salmonella Kentucky ST198 strain isolated from a chicken carcass in South Korea. Methods: The recovered Salmonella Kentucky, designated as K13SK002, was isolated from a chicken carcass in 2013. Genomic DNA was sequenced using a combination of 20-kb PacBio SMRTbell library and PacBio RS II. Antimicrobial susceptibility testing was performed and minimum inhibitory concentration (MIC) values were determined. Antimicrobial resistance and virulence genes were investigated in silico using ResFinder and VirulenceFinder tools, respectively, available at the Center for Genomic Epidemiology server. Results: The genome of K13SK002 consists of contiguous sequences (contigs) with a total length of 4 847 849 bp and a GC content of 52.20%. We detected a total of 4352 protein-coding sequences, 85 tRNA genes and 22 rRNA genes. MICs for ampicillin, ciprofloxacin, gentamicin, streptomycin, sulfisoxazole and tetracycline were 64, 16, 16, 64, >256 and 128 μg/mL, respectively. We found six antimicrobial resistance genes, however no plasmids and genes associated with adherence, toxins and exoenzyme were found. Ciprofloxacin-resistant Salmonella Kentucky K13SK002 was found to have mutations in DNA gyrase A (S83F and D87Y). Conclusion: This is the first report of the complete genome sequence of a Salmonella Kentucky ST198 strain isolated from a chicken carcass in South Korea. This genome sequence provides useful information on the genomic features associated with virulence and antimicrobial resistance in Salmonella Kentucky ST198.
MeSH term(s)	Animals ; Chickens ; Ciprofloxacin/pharmacology ; Drug Resistance, Multiple, Bacterial ; Europe ; Humans ; Kentucky ; Republic of Korea ; Salmonella/genetics
Chemical Substances	Ciprofloxacin (5E8K9I0O4U)
Language	English
Publishing date	2021-02-02
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2710046-7
ISSN	2213-7173 ; 2213-7165
ISSN (online)	2213-7173
ISSN	2213-7165
DOI	10.1016/j.jgar.2021.01.011
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Article ; Online: Prevalence and genome features of lake sinai virus isolated from Apis mellifera in the Republic of Korea.

Nguyen, Thi-Thu / Yoo, Mi-Sun / Truong, A-Tai / Youn, So Youn / Kim, Dong-Ho / Lee, Se-Ji / Yoon, Soon-Seek / Cho, Yun Sang

PloS one

2024 Volume 19, Issue 3, Page(s) e0299558

Abstract: Lake Sinai Virus (LSV) is an emerging pathogen known to affect the honeybee (Apis mellifera). However, its prevalence and genomic characteristics in the Republic of Korea (ROK) remain unexplored. This study aimed to assess the prevalence of and analyze ... ...

Abstract	Lake Sinai Virus (LSV) is an emerging pathogen known to affect the honeybee (Apis mellifera). However, its prevalence and genomic characteristics in the Republic of Korea (ROK) remain unexplored. This study aimed to assess the prevalence of and analyze the LSVs by examining 266 honeybee samples from the ROK. Our findings revealed that LSV exhibited the highest infection rate among the pathogens observed in Korean apiaries, particularly during the reported period of severe winter loss (SWL) in A. mellifera apiaries in 2022. Three LSV genotypes- 2, 3, and 4 -were identified using RNA-dependent RNA polymerase gene analysis. Importantly, the infection rates of LSV2 (65.2%) and LSV3 (73.3%) were significantly higher in colonies experiencing SWL than in those experiencing normal winter loss (NWL) (p < 0.03). Furthermore, this study provides the first near-complete genome sequences of the Korean LSV2, LSV3, and LSV4 strains, comprising 5,759, 6,040, and 5,985 nt, respectively. Phylogenetic analysis based on these near-complete genome sequences demonstrated a close relationship between LSVs in the ROK and China. The high LSV infection rate in colonies experiencing a heightened mortality rate during winter suggests that this pathogen might contribute to SWL in ROK. Moreover, the genomic characteristic information on LSVs in this study holds immense potential for epidemiological information and the selection of specific genes suitable for preventing and treating LSV, including the promising utilization of RNA interference medicine in the future.
MeSH term(s)	Bees ; Animals ; Phylogeny ; Prevalence ; Viruses ; RNA Viruses/genetics ; Republic of Korea/epidemiology
Language	English
Publishing date	2024-03-19
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0299558
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Article ; Online: Identification and pathogen detection of a Neocypholaelaps species (Acari: Mesostigmata: Ameroseiidae) from beehives in the Republic of Korea.

Nguyen, Thi-Thu / Yoo, Mi-Sun / Lee, Jong-Ho / Truong, A-Tai / Youn, So-Youn / Lee, Se-Ji / Yoon, Soon-Seek / Cho, Yun Sang

PloS one

2024 Volume 19, Issue 4, Page(s) e0300025

Abstract: In this study, we identified a new strain of the genus Neocypholaelaps from the beehives of Apis mellifera colonies in the Republic of Korea (ROK). The Neocypholaelap sp. KOR23 mites were collected from the hives of honeybee apiaries in Wonju, Gangwon-do, ...

Abstract	In this study, we identified a new strain of the genus Neocypholaelaps from the beehives of Apis mellifera colonies in the Republic of Korea (ROK). The Neocypholaelap sp. KOR23 mites were collected from the hives of honeybee apiaries in Wonju, Gangwon-do, in May 2023. Morphological and molecular analyses based on 18S and 28S rRNA gene regions conclusively identified that these mites belong to the genus Neocypholaelaps, closely resembling Neocypholaelaps sp. APGD-2010 that was first isolated from the United States. The presence of 9 of 25 honeybee pathogens in these mite samples suggests that Neocypholaelaps sp. KOR23 mite may act as an intermediate vector and carrier of honeybee diseases. The identification of various honeybee pathogens within this mite highlights their significance in disease transmission among honeybee colonies. This comprehensive study provides valuable insights into the taxonomy and implications of these mites for bee health management and pathogen dissemination.
MeSH term(s)	Bees ; Animals ; Mites ; Republic of Korea ; Varroidae
Language	English
Publishing date	2024-04-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0300025
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Article ; Online: Prevalence of honey bee pathogens and parasites in South Korea: A five-year surveillance study from 2017 to 2021

Truong, A-Tai / Yoo, Mi-Sun / Seo, Soo Kyoung / Hwang, Tae Jun / Yoon, Soon-Seek / Cho, Yun Sang

Heliyon. 2023 Feb., v. 9, no. 2 p.e13494-

2023

Abstract: Honey bees play an important role in the pollination of crops and wild plants and provide important products to humans. Pathogens and parasites are the main factors that threaten beekeeping in South Korea. Therefore, a nationwide detection of 14 honey ... ...

Abstract	Honey bees play an important role in the pollination of crops and wild plants and provide important products to humans. Pathogens and parasites are the main factors that threaten beekeeping in South Korea. Therefore, a nationwide detection of 14 honey bee pathogens, including parasites (phorid flies, Nosema ceranae, and Acarapis woodi mites), viruses, bacteria, and fungal pathogens, was conducted from 2017 to 2021 in the country. The infection rate and the trend of detection of each pathogenic agent were determined. A total of 830 honey bee samples from Apis cerana (n = 357) and A. mellifera (n = 473) were examined. N. ceranae (35.53%), deformed wing virus (52.63%), sacbrood virus (SBV) (52.63%), and black queen cell virus (55.26%) were the most prevalent honey bee pathogens, and their prevalence rapidly increased from 2017 to 2021. The prevalence of Paenibacillus larvae, Israeli acute paralysis virus, Ascosphaera apis, A. woodi, Melissococcus plutonius, and chronic bee paralysis virus remained stable during the surveillance period, with infection rates ranging from 5.26% to 16.45% in 2021. Other pathogens, including acute bee paralysis virus, phorid flies, Kashmir bee virus, and Aspergillus flavus, had low infection rates that gradually declined during the detection period. The occurrence of honeybee pathogens peaked in July. SBV was the most common pathogen in A. cerana, whereas N. ceranae was predominant in A. mellifera. This study provides information regarding the current status of honey bee pathogens and presents the trend of the occurrence of each pathogen in South Korea. These data are important for predicting outbreaks of honey bee diseases in the country.
Keywords	Acarapis woodi ; Acute bee paralysis virus ; Apis cerana ; Ascosphaera apis ; Aspergillus flavus ; Black queen cell virus ; Chronic bee paralysis virus ; Israeli acute paralysis virus ; Kashmir bee virus ; Melissococcus plutonius ; Nosema ceranae ; Paenibacillus ; Sacbrood virus ; apiculture ; fungi ; honey bees ; monitoring ; pathogens ; pollination ; viruses ; South Korea ; Apis mellifera ; Honey bee pathogens ; SBV ; Nosema ; DWV ; BQCV
Language	English
Dates of publication	2023-02
Publishing place	Elsevier Ltd
Document type	Article ; Online
Note	Use and reproduction
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2023.e13494
Database	NAL-Catalogue (AGRICOLA)

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Article: Prevalence of honey bee pathogens and parasites in South Korea: A five-year surveillance study from 2017 to 2021.

Truong, A-Tai / Yoo, Mi-Sun / Seo, Soo Kyoung / Hwang, Tae Jun / Yoon, Soon-Seek / Cho, Yun Sang

Heliyon

2023 Volume 9, Issue 2, Page(s) e13494

Abstract	Honey bees play an important role in the pollination of crops and wild plants and provide important products to humans. Pathogens and parasites are the main factors that threaten beekeeping in South Korea. Therefore, a nationwide detection of 14 honey bee pathogens, including parasites (phorid flies,
Language	English
Publishing date	2023-02-04
Publishing country	England
Document type	Journal Article
ZDB-ID	2835763-2
ISSN	2405-8440
ISSN	2405-8440
DOI	10.1016/j.heliyon.2023.e13494
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Article: Prevalence and characteristics of foodborne pathogens from slaughtered pig carcasses in Korea.

Hong, Serim / Kang, Hye Jeong / Lee, Hye-Young / Jung, Hye-Ri / Moon, Jin-San / Yoon, Soon-Seek / Kim, Ha-Young / Lee, Young Ju

Frontiers in veterinary science

2023 Volume 10, Page(s) 1158196

Abstract: The introduction of bacteria into slaughterhouses can lead to microbial contamination in carcasses during slaughter, and the initial level of bacteria in carcasses is important because it directly affects spoilage and the shelf life. This study was ... ...

Abstract	The introduction of bacteria into slaughterhouses can lead to microbial contamination in carcasses during slaughter, and the initial level of bacteria in carcasses is important because it directly affects spoilage and the shelf life. This study was conducted to investigate the microbiological quality, and the prevalence of foodborne pathogens in 200 carcasses from 20 pig slaughterhouses across Korea. Distribution of microbial counts were significantly higher for aerobic bacteria at 3.01-4.00 log
Language	English
Publishing date	2023-03-31
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2834243-4
ISSN	2297-1769
ISSN	2297-1769
DOI	10.3389/fvets.2023.1158196
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Article ; Online: Probiotic candidates for controlling Paenibacillus larvae, a causative agent of American foulbrood disease in honey bee.

Truong, A-Tai / Kang, Jeong Eun / Yoo, Mi-Sun / Nguyen, Thi Thu / Youn, So-Youn / Yoon, Soon-Seek / Cho, Yun Sang

BMC microbiology

2023 Volume 23, Issue 1, Page(s) 150

Abstract: Background: American foulbrood (AFB) disease caused by Paenibacillus larvae is dangerous, and threatens beekeeping. The eco-friendly treatment method using probiotics is expected to be the prospective method for controlling this pathogen in honey bees. ... ...

Abstract	Background: American foulbrood (AFB) disease caused by Paenibacillus larvae is dangerous, and threatens beekeeping. The eco-friendly treatment method using probiotics is expected to be the prospective method for controlling this pathogen in honey bees. Therefore, this study investigated the bacterial species that have antimicrobial activity against P. larvae. Results: Overall, 67 strains of the gut microbiome were isolated and identified in three phyla; the isolates had the following prevalence rates: Firmicutes 41/67 (61.19%), Actinobacteria 24/67 (35.82%), and Proteobacteria 2/67 (2.99%). Antimicrobial properties against P. larvae on agar plates were seen in 20 isolates of the genus Lactobacillus, Firmicutes phylum. Six representative strains from each species (L. apis HSY8_B25, L. panisapium PKH2_L3, L. melliventris HSY3_B5, L. kimbladii AHS3_B36, L. kullabergensis OMG2_B25, and L. mellis OMG2_B33) with the largest inhibition zones on agar plates were selected for in vitro larvae rearing challenges. The results showed that three isolates (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) had the potential to be probiotic candidates with the properties of safety to larvae, inhibition against P. larvae in infected larvae, and high adhesion ability. Conclusions: Overall, 20 strains of the genus Lactobacillus with antimicrobial properties against P. larvae were identified in this study. Three representative strains from different species (L. apis HSY8_B25, L. panisapium PKH2_L3, and L. melliventris HSY3_B5) were evaluated to be potential probiotic candidates and were selected for probiotic development for the prevention of AFB. Importantly, the species L. panisapium isolated from larvae was identified with antimicrobial activity for the first time in this study.
MeSH term(s)	Bees ; Animals ; Paenibacillus larvae/genetics ; Agar ; Larva ; Actinobacteria ; Firmicutes ; Lactobacillus ; Probiotics/pharmacology
Chemical Substances	Agar (9002-18-0)
Language	English
Publishing date	2023-05-24
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2041505-9
ISSN	1471-2180 ; 1471-2180
ISSN (online)	1471-2180
ISSN	1471-2180
DOI	10.1186/s12866-023-02902-0
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Article ; Online: Large-Scale Application of Double-Stranded RNA Shows Potential for Reduction of Sacbrood Virus Disease in

Yoo, Mi-Sun / Truong, A-Tai / Jeong, Hana / Hahn, Do-Hyun / Lee, Ju-Seong / Yoon, Soon-Seek / Youn, So-Youn / Cho, Yun-Sang

Viruses

2023 Volume 15, Issue 4

Abstract: Sacbrood virus (SBV) infection has emerged as a remarkable threat ... ...

Abstract	Sacbrood virus (SBV) infection has emerged as a remarkable threat to
MeSH term(s)	Animals ; Bees/genetics ; Larva ; RNA Viruses/genetics ; RNA, Double-Stranded/genetics ; Virus Diseases
Chemical Substances	RNA, Double-Stranded
Language	English
Publishing date	2023-03-31
Publishing country	Switzerland
Document type	Comparative Study ; Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2516098-9
ISSN	1999-4915 ; 1999-4915
ISSN (online)	1999-4915
ISSN	1999-4915
DOI	10.3390/v15040897
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