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Original Articles
Prevalent Multidrug-resistant Nonvaccine Serotypes in Pneumococcal Carriage of Healthy Korean Children Associated with the Low Coverage of the Seven-valent Pneumococcal Conjugate Vaccine
Sungkyoung Lee, Ji-Hye Kim, Seong-Han Kim, Misun Park, Songmee Bae
Osong Public Health Res Perspect. 2013;4(6):316-322.   Published online December 31, 2013
DOI: https://doi.org/10.1016/j.phrp.2013.10.004
  • 1,910 View
  • 13 Download
  • 3 Citations
AbstractAbstract PDF
Objectives
Our previous longitudinal multicenter-based carriage study showed that the average carriage rate of Streptococcus pneumoniae was 16.8% in 582 healthy children attending kindergarten or elementary school in Seoul, Korea. We assessed serotype-specific prevalence and antimicrobial resistance among colonizing pneumococcal isolates from young children in the era of low use of the seven-valent pneumococcal conjugate vaccine (PCV7).
Methods
Serotypes were determined by an agglutination test with specific antisera or by a multiplex polymerase chain reaction (PCR) assay. An antimicrobial susceptibility test was performed with broth microdilution in Korean 96-well panels from Dade-MicroScan (Sacramento, CA, USA).
Results
Pneumococcal colonization patterns were dynamic and longterm persistent carriage was rare, which indicated a sequential turnover of pneumococcal strains. Of the 369 pneumococci (except for 23 killed isolates), 129 (34.9%) isolates were PCV7 vaccine serotypes (VTs); 213 (57.8%) isolates were nonvaccine serotypes (NVTs); and the remaining 27 (7.2%) isolates were nontypable (NT). The highest rates of multidrug resistance (MDR) were observed in VTs (86.0%; 111/129 isolates) and NVTs (70.0%; 149/213 isolates).
Conclusion
This study overall showed the frequent carriage of VTs and NVTs with MDR in healthy children attending kindergarten or elementary school. Efforts should be directed toward reducing the extensive prescription of antibiotics and using new broader vaccines to reduce the expansion of MDR strains of NVTs in our community.

Citations

Citations to this article as recorded by  
  • Characterization of Pneumococcal Colonization Dynamics and Antimicrobial Resistance Using Shotgun Metagenomic Sequencing in Intensively Sampled South African Infants
    Rendani I. Manenzhe, Felix S. Dube, Meredith Wright, Katie Lennard, Stephanie Mounaud, Stephanie W. Lo, Heather J. Zar, William C. Nierman, Mark P. Nicol, Clinton Moodley
    Frontiers in Public Health.2020;[Epub]     CrossRef
  • Encouraging rational antibiotic use in childhood pneumonia: a focus on Vietnam and the Western Pacific Region
    Nguyen T. K. Phuong, Tran T. Hoang, Pham H. Van, Lolyta Tu, Stephen M. Graham, Ben J. Marais
    Pneumonia.2017;[Epub]     CrossRef
  • Bacterial Density, Serotype Distribution and Antibiotic Resistance of Pneumococcal Strains from the Nasopharynx of Peruvian Children Before and After Pneumococcal Conjugate Vaccine 7
    Christiane R. Hanke, Carlos G. Grijalva, Sopio Chochua, Mathias W. Pletz, Claudia Hornberg, Kathryn M. Edwards, Marie R. Griffin, Hector Verastegui, Ana I. Gil, Claudio F. Lanata, Keith P. Klugman, Jorge E. Vidal
    Pediatric Infectious Disease Journal.2016; 35(4): 432.     CrossRef
Distribution of Virulence Genes and Their Association of Serotypes in Pathogenic Escherichia coli Isolates From Diarrheal Patients in Korea
Seung-Hak Cho, Kyung-Hwan Oh, Seong-Han Kim, Hee-Bok Oh, Mi-Sun Park
Osong Public Health Res Perspect. 2010;1(1):29-35.   Published online December 31, 2010
DOI: https://doi.org/10.1016/j.phrp.2010.12.008
  • 2,105 View
  • 15 Download
  • 6 Citations
AbstractAbstract PDF
Objectives
To characterise the genetic and serological diversity of pathogenic Escherichia coli, we tested 111 E coli strains isolated from diarrhoeal patients in Korea between 2003 and 2006.
Methods
The isolates were tested through polymerase chain reaction (PCR) and slide agglutination method for the detection of virulence genes and serotypes, respectively. To compare the expression of Shiga toxin (stx)-1 and stx2 genes, real-time quantitative reverse-transcriptase PCR and rapid exprssion assay, reversed-passive latex agglutination, were performed.
Results
Forty-nine Shiga toxin-producing E coli (STEC) strains and 62 non-STEC strains, including 20 enteropathogenic E coli, 20 enterotoxigenic E coli, 20 enteroaggregative E coli, and 2 enteroinvasive E coli were randomly chosen from the strains isolated from diarrhoeal patients in Korea between 2003 and 2006. PCR analysis indicated that locus of enterocyte effacement pathogenicity island, that is, eaeA, espADB, and tir genes were present in STEC, enteropathogenic E coli, and enteroinvasive E coli. Quorum sensing-related gene luxS was detected in most of pathogenic E coli strains. Major serotypes of the STEC strains were O157 (26%) and O26 (20%), whereas the non-STEC strains possessed various serotypes. Especially, all the strains with serotype O157 carried stx2 and the tested virulence factors. Of the STEC strains, the data of real-time quantitative reverse-transcriptase PCR and reversed-passive latex agglutination tests showed that messenger RNA- and protein expression of stx2 gene were higher than those of stx1 gene.
Conclusion
Our results provide the epidemiological information regarding the trend of STEC and non-STEC infections in the general population and show the fundamental data in association of serotypes with virulence genes in diarrhoeagenic E coli strains from Korea.

Citations

Citations to this article as recorded by  
  • Comparative Analysis of Human and Animal E. coli: Serotyping, Antimicrobial Resistance, and Virulence Gene Profiling
    Mahmoud M. Bendary, Marwa I. Abdel-Hamid, Walaa A. Alshareef, Hanan M. Alshareef, Rasha A. Mosbah, Nasreen N. Omar, Mohammad M. Al-Sanea, Majid Alhomrani, Abdulhakeem S. Alamri, Walaa H. Moustafa
    Antibiotics.2022; 11(5): 552.     CrossRef
  • Antimicrobial peptide human β-defensin-2 improves in vitro cellular viability and reduces pro-inflammatory effects induced by enteroinvasive Escherichia coli in Caco-2 cells by inhibiting invasion and virulence factors’ expression
    Alessandra Fusco, Vittoria Savio, Brunella Perfetto, Roberto Mattina, Giovanna Donnarumma
    Frontiers in Cellular and Infection Microbiology.2022;[Epub]     CrossRef
  • Distribution of Pathogenicity Island Markers and H-Antigen Types of Escherichia coli O25b/ST131 Isolates from Patients with Urinary Tract Infection in Iran
    Masoumeh Rasoulinasab, Fereshteh Shahcheraghi, Mohammad Mehdi Feizabadi, Bahram Nikmanesh, Azade Hajihasani, Shahram Sabeti, Mohammad Mehdi Aslani
    Microbial Drug Resistance.2021; 27(3): 369.     CrossRef
  • Development and validation of a predictive model for pathogenic Escherichia coli in fresh‐cut produce
    You Jin Kim, Ju Yeon Park, Soo Hwan Suh, Mi‐Gyeong Kim, Hyo‐Sun Kwak, Soon Han Kim, Eun Jeong Heo
    Food Science & Nutrition.2021; 9(12): 6866.     CrossRef
  • In vitro antibacterial activity of poly (amidoamine)-G7 dendrimer
    Mitra Gholami, Rashin Mohammadi, Mohsen Arzanlou, Fakhraddin Akbari Dourbash, Ebrahim Kouhsari, Gharib Majidi, Seyed Mohsen Mohseni, Shahram Nazari
    BMC Infectious Diseases.2017;[Epub]     CrossRef
  • Occurrence of pathogenic Escherichia coli in commercially available fresh vegetable products in Korea
    Hyun Jung Kim, Minseon Koo, A-Ram Jeong, Seung-Youb Baek, Joon-Il Cho, Soon-Ho Lee, In-Gyun Hwang
    Journal of the Korean Society for Applied Biologic.2014; 57(3): 367.     CrossRef

PHRP : Osong Public Health and Research Perspectives