Foodborne pathogens and disease最新文献

{"title":"The Prevalence of <i>Brucella</i> spp. in Dairy Products in Iran: A Systematic Review and Meta-Analysis.","authors":"Narges Shahbazpour, Elahesadat Hosseini, Seyed Ehsan Beladian Behbahan, Fatemeh Esfarjani, Seyed Amir Mohamad Mortazavian, Abdol-Samad Abedi, Slim Smaoui","doi":"10.1089/fpd.2024.0093","DOIUrl":"10.1089/fpd.2024.0093","url":null,"abstract":"<p><p>Brucellosis, a significant zoonotic disease, threatens food safety substantially, particularly in developing nations such as the Middle East. This study aimed to comprehensively assess the prevalence of <i>Brucella</i> spp. in Iranian milk and dairy products through a systematic review and meta-analysis. A thorough search of international and domestic databases from January 2008 to October 2023 identified 38 relevant studies encompassing 11,130 samples for meta-analysis. The overall prevalence of <i>Brucella</i> spp. in Iranian dairy products was 22% (95% CI: 16-28%). The highest and lowest overall prevalence of <i>Brucella</i> spp. in milk were found in raw goat milk 27% (95% CI: 11-42%) and raw camel milk 15% (95% CI: -0.42 to 72%), respectively. The overall prevalence of traditional cheese, ice cream, and cream is estimated to be 9% (95% CI: -16 to 35%), 2% (95% CI: -2.78 to 2.82%), and 9% (95% CI: -0.94 to 1.12%). Geographical disparities were evident, with Zanjan province reporting the highest contamination rate, 53%, while Razavi Khorasan province had the lowest, 1%. However, the prevalence of <i>Brucella</i> spp. in Iranian dairy products has fluctuated over time, with a significant association between the study year and sample size. Comprehensive planning, robust policy implementation, and rigorous monitoring are imperative to mitigate and ultimately eliminate <i>Brucella</i> contamination in dairy products effectively. Further research is essential to refine prevalence estimates and develop targeted prevention strategies to safeguard public health.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":"71-85"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142105981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimicrobial Resistance Characteristics of Fecal <i>Escherichia coli</i> and <i>Enterococcus</i> Species in U.S. Goats: 2019 National Animal Health Monitoring System Enteric Study.","authors":"Catherine A Gensler, Stephanie C Hempstead, Shivaramu Keelara, Paula J Fedorka-Cray, Natalie J Urie, Alyson M Wiedenheft, Keira Stuart, Katherine L Marshall, Megan E Jacob","doi":"10.1089/fpd.2023.0089","DOIUrl":"10.1089/fpd.2023.0089","url":null,"abstract":"<p><p><i>Escherichia coli</i> and <i>Enterococcus</i> species are normal bacteria of the gastrointestinal tract and serve as indicator organisms for the epidemiology and emergence of antimicrobial resistance in their hosts and the environment. Some <i>E. coli</i> serovars, including <i>E. coli</i> O157:H7, are important human pathogens, although reservoir species such as goats remain asymptomatic. We describe the prevalence and antimicrobial resistance of generic <i>E. coli</i>, <i>E. coli</i> O157:H7, and <i>Enterococcus</i> species collected from a national surveillance study of goat feces as part of the National Animal Health Monitoring System (NAHMS) Goat 2019 study. Fecal samples were collected from 4918 goats on 332 operations across the United States. Expectedly, a high prevalence of <i>E. coli</i> (98.7%, 4850/4915) and <i>Enterococcus</i> species (94.8%, 4662/4918) was found. <i>E. coli</i> O157:H7 prevalence was low (0.2%; 10/4918). <i>E. coli</i> isolates, up to three per operation, were evaluated for antimicrobial susceptibility and 84.7% (571/674) were pansusceptible. Multidrug resistance (MDR; ≥3 classes) was uncommon among <i>E. coli</i>, occurring in 8.2% of isolates (55/674). Resistance toward seven antimicrobial classes was observed in a single isolate. Resistance to tetracycline alone (13.6%, 92/674) or to tetracycline, streptomycin, and sulfisoxazole (7.0% 47/674) was the most common pattern. All <i>E. coli</i> O157:H7 isolates were pansusceptible. <i>Enterococcus</i> isolates, up to four per operation, were prioritized by public health importance, including <i>Enterococcus faecium</i> and <i>Enterococcus faecalis</i> and evaluated. Resistance to lincomycin (93.8%, 1232/1313) was most common, with MDR detected in 29.5% (388/1313) of isolates. The combination of ciprofloxacin, lincomycin, and quinupristin resistance (27.1%, 105/388) was the most common pattern detected. Distribution and characteristics of antimicrobial resistance in <i>E. coli</i> and <i>Enterococcus</i> in the U.S. goat population from this study can inform stewardship considerations and public health efforts surrounding goats and their products.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":"97-108"},"PeriodicalIF":1.9,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140174097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Antimicrobial Resistance Profiles of <i>Escherichia coli</i> Isolated from Food Animal Carcasses During 2010-2023 in South Korea.","authors":"Yu-Jeong Hwang, Bo-Youn Moon, Ji-In Kim, Md Sekendar Ali, Hyun-Ju Song, Yeon-Hee Lee, Ji-Hyun Choi, Hee-Seung Kang, Hyeon-Jung Park, Jae-Myung Kim, Suk-Kyung Lim","doi":"10.1089/fpd.2024.0168","DOIUrl":"10.1089/fpd.2024.0168","url":null,"abstract":"<p><p>Antimicrobial-resistant bacterial contamination of meat poses a significant global public health risk. We aimed to determine antimicrobial resistance profiles and trends of <i>Escherichia coli</i> recovered from carcasses of healthy food-producing animals in South Korea during 2010-2023. In total, 4748 <i>E. coli</i> isolates obtained from cattle (<i>n</i> = 1582), pigs (<i>n</i> = 1572), and chickens (<i>n</i> = 1594) were assessed for susceptibility to 12 antimicrobials. Antimicrobial resistance was different among samples. Overall, antimicrobial resistance was high in pigs and chicken carcasses. More than about 80% of isolates from pigs and chickens exhibited resistance to one or more antimicrobials. Among the tested antimicrobials, resistance to ampicillin, chloramphenicol, streptomycin, and tetracycline was significantly higher in pigs and chickens compared with cattle (<i>p</i> < 0.05). Moreover, chicken isolates showed much higher resistance to nalidixic acid and ciprofloxacin than other samples. Resistance to critically important antimicrobials, colistin, remained less than about 1%, while resistance to ceftiofur showed increased trends in pig and chicken samples. Higher multidrug-resistant (MDR) isolates were identified in chickens and pigs compared with cattle (<i>p</i> < 0.05). Furthermore, most MDR patterns include streptomycin and tetracycline resistance. MDR <i>E. coli</i> contaminating meat during slaughter can be transmitted to humans via the food chain. Thus, prudent use of antimicrobials and proper hygienic practices are urgently needed to reduce the risk of transmission.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143022791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular Characterization of Whole Genome Sequencing of <i>Salmonella</i> spp. in Shapingba District, Chongqing, China, 2016-2023.","authors":"Fei Chen, Xin Zhang, Jie Zheng, Yu Tang, Xiaoxia Fan, Yulan Huang, Haihong Jia, Xiaorong Yang","doi":"10.1089/fpd.2024.0138","DOIUrl":"https://doi.org/10.1089/fpd.2024.0138","url":null,"abstract":"<p><p>In recent years, <i>Salmonella</i> infection is a major global public health concern, particularly in food safety. This study analyzed the genomes of 102 <i>Salmonella</i> strains isolated between 2016 and 2023 from food, foodborne disease patients, and food poisoning incidents, focusing on their molecular characteristics, antibiotic resistance genes (ARGs), and virulence genes. <i>S. enterica</i> serovar Enteritidis (37.3%) and <i>S. enterica</i> serovar Typhimurium (21.6%, including its monophasic variant 1,4,[5],12:i:-) were the main strains among 22 serotypes. Multilocus sequence typing revealed 23 sequence types (STs), with ST11, ST19, and ST34 as the most prevalent. All strains carried at least 24 ARGs. Detection rates for <i>aac(6')-Iy</i>, <i>bla</i>_TEM-1, and <i>sul2</i> ranged from 44.1% to 63.7%, mainly in <i>S.</i> Enteritidis and <i>S.</i> Typhimurium. Rates for <i>qnrS1</i>, <i>sul1</i>, and <i>aadA</i> were 12.8% to 16.7%, while <i>mcr-1</i> appeared in one ST34 <i>S.</i> Typhimurium strain. All strains contained at least 98 virulence genes. The genes <i>pefABCD</i>, <i>mig-5</i>, and <i>spvBCD</i> were in 48.0% of strains, while <i>rck</i> was found in 36.3%, mainly linked to <i>S.</i> Enteritidis and <i>S.</i> Typhimurium. The <i>tssM</i> gene was found in 37.3% of the strains, exclusively in <i>S.</i> Enteritidis. Core genome single nucleotide polymorphisms (cgSNPs) analysis grouped the strains into nine clusters, with 75.5% belonging to three major groups. Food poisoning event 1 was correlated with cluster 3, while events 2 and 3 were linked to cluster 1. Across events, SNP differences among strains were ≤6. Strains with SNP differences ≤10 were also found in other clusters. This method is promising for tracking sporadic cases and identifying potential foodborne safety incidents. <i>Salmonella</i> strains in the region exhibit substantial genetic diversity, demonstrating the efficacy of cgSNPs analysis for source tracking. Ongoing surveillance is essential given the prevalence of ARGs and virulence genes. This study provides a data foundation for local <i>Salmonella</i> epidemiology.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143003059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Food Safety Concerns in Pakistan: Monitoring of Antimicrobial-Resistant Bacteria and Residue Contamination in Commercially Available Fish and Poultry Meat Samples.","authors":"Muhammad Usman Qamar, Kaneez Fizza, Muhammad Ismail Chughtai, Muhammad Shafique, Bibigul Seytkhanova, Ayaz Yktiyarov, Aatika, Zikria Saleem, Sana Mustafa, Zainab Tufail, Mahnoor Chaudhry, Tawaf Ali Shah, Ahmad Mohammad Salamatullah, Mohammed Bourhia","doi":"10.1089/fpd.2024.0117","DOIUrl":"https://doi.org/10.1089/fpd.2024.0117","url":null,"abstract":"<p><p>Food safety is a critical issue in the 21st century due to antibiotic-resistant bacteria causing harmful foodborne diseases. This comprehensive study meticulously examined the presence of bacterial isolates, quinolone residue, and antimicrobial resistance genes in samples of broiler and fish meat. Forty samples were collected from various locations in the Faisalabad metropolis. The samples underwent culture on various types of agar, and the Vitek 2 compact system was used to confirm the isolates along with determining the minimum inhibitory concentration of antibiotics. Additionally, polymerase chain reaction was used to identify antimicrobial-resistant genes, and an enzyme-linked immunosorbent assay (ELISA) kit was employed to detect quinolone residue in each sample. Out of 40 fish samples, 66 polymicrobials were identified with <i>Escherichia coli</i> being the most prevalent (26.6%), followed by <i>Klebsiella pneumoniae</i> (16.6%) and <i>Acinetobacter baumannii</i> (15%). Furthermore, 70 polymicrobial were identified in the broiler samples, with 41.6% <i>E. coli</i> and 15% <i>K. pneumoniae</i>. In fish isolates, 14 (21%) <i>qnr</i> gene, 18 (27.2%) <i>bla</i>_CTX-M, and 11 (16.6%) <i>bla</i>_NDM-1, and in broiler samples, 19 (27.1%) <i>qnr</i> gene, 19 (27.1%) <i>bla</i>_TEM and 22 (31.4%) <i>bla</i>_CTX-M, and 5 (7.1%) <i>bla</i>_NDM-1 were found. Eighteen (45%) broiler and 7 (17.5%) fish samples with more than 100 µg per kg (ppb) for quinolone residues. The study concluded that the increased prevalence of multidrug-resistant bacteria and quinolone residue poses a significant threat to consumer health.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143003058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experience and Perspectives on Antibacterial Therapy for Listeriosis in a Tertiary Teaching Hospital in China: A Retrospective Study and Health Care Provider Survey.","authors":"Naiju Zhang, Zhenjie Wang, Zhijun Li, Yongzhong Xie, Jinchun Liu, Chunming Gao, Chuanmiao Liu, Tianping Chen","doi":"10.1089/fpd.2024.0079","DOIUrl":"https://doi.org/10.1089/fpd.2024.0079","url":null,"abstract":"<p><p>Listeriosis is a rare, life-threatening bacterial infection. Prompt, appropriate antibiotic treatment is essential to save lives. We aimed to investigate antibiotic selection and listeriosis knowledge among health care providers. We first performed a retrospective study on patients with listeriosis who were treated in a hospital in China from January 2013 to March 2023. Patient characteristics and antibiotic selections were recorded. Antibiotics were classified as effective or ineffective based on the efficacy classifications listed in <i>The Sanford Guide to Antimicrobial Therapy</i> (50^th edition). We then conducted a questionnaire survey of health care providers to investigate their listeriosis knowledge and practices between April 2023 to May 2023. Fifteen listeriosis patients were identified, with a case fatality rate of 26.7% (4/15). Empirical treatments assessed as effective antibiotics or ineffective antibiotics were given to 33.3% (5/15) and 66.7% (10/15) of the patients, respectively. After <i>Listeria monocytogenes</i> was identified, 40% (6/15) of the patients received an adjustment to their antibiotics, although 50% (3/6) patients still received ineffective antibiotics. The questionnaire survey of 77 participating health care providers showed that 32.9% (24/73) of the clinicians were unaware of the appropriate antibiotics for listeriosis. Most participants (83.1%, 64/77) would read the drug sensitivity report before selecting the antibiotics. The selection of effective antibiotics differed between the infectious diseases department and other departments (<i>p</i> < 0.001), but did not differ between junior title and other titles (<i>p</i> = 0.088). Most patients with listeriosis did not receive appropriate antibiotics, which might have accounted for the high fatality rate, and may have resulted from inadequate listeriosis knowledge. More education and correct reporting of drug sensitivity results are urgently needed.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142947051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Listeriosis Case Associated with Ice Cream Consumption in China in 2019.","authors":"Xiaoyuan Zhang, Yanlin Niu, Yuzhu Liu, Penghang Zhang, Xiaochen Ma","doi":"10.1089/fpd.2024.0009","DOIUrl":"https://doi.org/10.1089/fpd.2024.0009","url":null,"abstract":"<p><p>During the 2019 Chinese National Microbiological Food Safety Surveillance program, <i>Listeria monocytogenes</i> was detected in ice cream samples produced by Manufacturer A. By comparing the sequences of isolates derived from the ice cream with those of isolates derived from humans, we identified one human-derived isolate that was genetically indistinguishable from one ice cream-derived isolates. The patient was hospitalized with listeriosis in Beijing, China in March 2019. Food history obtained from the patient indicated that he had consumed ice cream produced by Manufacturer A during the 30-day period before the onset of illness. No cases of listeriosis were detected after the ice cream produced by Manufacturer A was removed from the shelves. Overall, this report presents the first case of <i>L. monocytogenes</i> infection associated with ice cream in China.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142946948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Morbidity, Mortality, and Epidemiological Features of Clinical Invasive Listeriosis Isolates from Sentinel Surveillance in Beijing, China, 2013-2022.","authors":"Tongyu Wang, Yanlin Niu, Jinru Jiang, Xiaoyuan Zhang, Chao Wang, Yangbo Wu, Yunchang Guo, Weiwei Li, Penghang Zhang, Yuzhu Liu, Linlin Wang, Xiaochen Ma","doi":"10.1089/fpd.2024.0067","DOIUrl":"https://doi.org/10.1089/fpd.2024.0067","url":null,"abstract":"<p><p>Listeriosis is a relatively rare but severe foodborne disease, which has significant public health concern of persons with underlying conditions and pregnant women. This study aimed to estimate the morbidity, mortality, and fatality rates of listeriosis over a 10-year period and clarify the epidemiological features of the pathogen in Beijing, China, based on voluntary reporting of sentinel surveillance. A total of 228 listeriosis cases were reported with annual morbidity rate of 1.054 per million inhabitants, including 113 maternal-neonatal cases with mean annual morbidity rate of 63.401 per million live births in Beijing from 2013 to 2022.The morbidity rate increased from 0.094 to 0.868 per million inhabitants from 2013 to 2019 (<i>p</i> for trend = 0.003). The overall and maternal-neonatal fatality rate were 31.82% and 42.86%, respectively. Four serogroups were identified in this study, and 1/2b predominated (89 strains). We observed the morbidity rate of listeriosis increased in Beijing over the past 10 years. Maternal-neonatal cases accounted for a higher proportion than that described in other countries, considering population base and fertility policy in China, official recommendations targeting pregnant women should be actively promoted.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142947054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Virulence Gene and Drug Resistance Analysis of Shiga Toxin-Producing <i>Escherichia coli</i> from Diarrhea Calves in Xinjiang, China.","authors":"Lei Wang, Yixin Bai, Xuhui Shi, Xiaofeng Zheng, Yingyu Liu, Yi Zhang, Mengfei Zhang, Zhanqiang Su, Jinxin Xie, Panpan Tong","doi":"10.1089/fpd.2024.0056","DOIUrl":"https://doi.org/10.1089/fpd.2024.0056","url":null,"abstract":"<p><p>This investigation aimed to examine the virulence genes and antimicrobial resistance profiles of Shiga toxin-producing <i>Escherichia coli</i> (STEC) strains found in diarrheal calves in Xinjiang between 2016 and 2022. A total of 800 samples, including 232 fecal and 568 rectal swabs from calves under 2 months old with diarrhea, were analyzed for Shiga toxin (Stx)-encoding genes using polymerase chain reaction. The study characterized the isolates based on their <i>stx</i> subtypes, virulence genes, O serogroups, phylogenetic groups, hemolytic phenotypes, antibiotic resistance, and resistance genes. This investigation detected 32 STEC isolates, with <i>stx1</i> and <i>stx2</i> genes in 37.5% and 12.5% of the isolates, respectively. Additionally, half of the isolates contained both genes. The combination of <i>stx</i> subtypes was predominantly observed as follows: <i>stx1a/stx2d</i> (31.3%), <i>stx1a</i> only (31.3%), <i>stx1a/stx2a/stx2d</i> (12.5%), <i>stx2d</i> only (9.4%), <i>stx1a/stx1d/stx2d</i> (6.2%), <i>stx1a/stx1d</i> (6.2%), and <i>stx2a/stx2d</i> (3.1%). The <i>eae</i> gene was found in one isolate that carried <i>stx1</i>, <i>stx2</i>, and <i>hlyA</i>, defining it as enterohemorrhagic <i>E. coli</i>. Additionally, six STEC carrying the <i>astA</i> gene were identified as EAST1⁺ STEC. These isolates did not correspond to the serotypes in the \"top seven\" category. The phylogenetic analysis revealed that most strains belonged to groups B1 (43.8%) and A (40.6%), with 56.3% exhibiting hemolytic activity. Moreover, among the 34.4% resistant isolates (2021∼2022), the drug resistance rates of STEC isolates to tetracycline, florfenicol, ceftazidime, ampicillin, cefotaxime, gentamicin, and sulphamethoxazole ranged from 21.9% to 34.4%, to streptomycin, piperacillin, ceftazidime, aztreonam-polymyxin B, and cefepime ranged from 3.1% to 18.8%. All isolates exhibited multiple drug resistance. The most common resistance genes identified were <i>floR</i> (31.3%), <i>tetA</i> (25.0%), <i>sulR</i> (15.6%), <i>strA</i> and <i>strB</i> (12.5%), and <i>bla</i>_CTX-M-1, <i>bla</i>_TEM-1, and <i>mph</i>(A) (9.4%). These findings offer valuable information that might aid in developing preventative measures and enhance the comprehension of the epidemiological characteristics of STEC in calves.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142931108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Whole-Genome Sequencing of Antimicrobial Resistant <i>Klebsiella quasipneumoniae</i>, a Novel Sequence Type 5655 from Retail Fish Market, Assam, India.","authors":"Sahadevan Sangeetha, Sudha Sajeev, Muneeb K Hamza, Bibek R Shome, Claire Raisen, Mark A Holmes, Gopalan Krishnan Sivaraman","doi":"10.1089/fpd.2023.0017","DOIUrl":"https://doi.org/10.1089/fpd.2023.0017","url":null,"abstract":"<p><p><i>Klebsiella quasipneumoniae</i> is a recently described species that can be differentiated from <i>Klebsiella pneumoniae</i>. However, in clinical settings, they are frequently misidentified as <i>K. pneumoniae</i>. In this study, our objective was to conduct genomic characterization and bioinformatics analysis of <i>K. quasipneumoniae</i> subsp. <i>quasipneumoniae</i> (KpII-A) isolated from a sample obtained from a retail fish market in Assam, India. Notably, this particular isolate was identified as <i>K. pneumoniae</i> when identified using BD Pheonix™ M50 (BD Difco, USA). This represents a serious pitfall of conventional microbiological methods for distinguishing between <i>K. pneumoniae</i> and <i>K. quasipneumoniae</i>. In this connection, identifying differences in nuclear gene content is key to avoid misidentification. The isolate was confirmed to be KpII-A using species identification by Mash Screen and whole-genome sequencing by the Illumina platform. We report the draft genome sequence of this strain, comprising of 53 contigs with an average GC content of 58.11%. The annotation revealed 5,095 protein coding sequences, 69 tRNA genes, and 4 rRNA genes. The isolated strain acknowledges the presence of <i>oqxA, oqxB, fosA,</i> and <i>bla</i>_OKP-A-3 antimicrobial resistance genes (ARGs). Additionally two phage genomes were detected in contigs 3 and 19 of the bacterial genome. Based on the multilocus sequence typing and genome sequencing, the isolate was identified as a novel sequence type, ST5655, within the species <i>K. quasipneumoniae</i> under the phylogroup KpII-A. The presence of antimicrobial resistance genes in KpII-A, isolated from retail fish samples, raises concerns regarding transmission across barriers in ecological niches and possible transmission to consumers. Given that fish may serve as a potential vehicle for ARG transmission, our findings are highly relevant and paramount to human health. Moreover, our study supports the robustness of the sequence-based microbial identification.</p>","PeriodicalId":12333,"journal":{"name":"Foodborne pathogens and disease","volume":" ","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142931109","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}