All Stories

  1. Editorial: Perspectives in antibiotic resistance and new antimicrobial drugs: 2025

    Article • Frontiers in Cellular and Infection Microbiology, June 2026, Frontiers

    Constantinos C Papagiannitsis

  2. Clonal outbreak of an extensively drug-resistant NDM-1 producing Pseudomonas aeruginosa in a local hospital in the Czech Republic

    Article • Microbiology Spectrum, January 2026, ASM Journals

    Constantinos C Papagiannitsis

  3. Exploring Virulence Characteristics of Clinical Escherichia coli Isolates from Greece

    Article • Microorganisms, June 2025, MDPI AG

    Constantinos C Papagiannitsis

  4. Exploring virulence characteristics of Klebsiella pneumoniae isolates recovered from a Greek hospital

    Article • Molecular Genetics and Genomics, May 2025, Springer Science + Business Media

    Constantinos C Papagiannitsis

  5. Emergence of NDM-1-Producing Pseudomonas aeruginosa Nosocomial Isolates in Attica Region of Greece

    Article • Microorganisms, August 2024, MDPI AG

    Constantinos C Papagiannitsis

  6. A novel F type plasmid encoding mcr-10 in a clinical Enterobacter ludwigii strain from a tertiary hospital in the Czech Republic

    Article • Journal of Global Antimicrobial Resistance, June 2024, Elsevier

    Constantinos C Papagiannitsis

  7. Prevalence and analysis of CRISPR/Cas systems in Pseudomonas aeruginosa isolates from Greece

    Article • Molecular Genetics and Genomics, October 2022, Springer Science + Business Media

    Constantinos C Papagiannitsis

  8. Genomic characterisation of three GES-producing Enterobacterales isolated in the Czech Republic

    Article • Journal of Global Antimicrobial Resistance, June 2022, Elsevier

    Constantinos C Papagiannitsis

  9. Multi-Drug Resistant Plasmids with ESBL/AmpC and mcr-5.1 in Paraguayan Poultry Farms: The Linkage of Antibiotic Resistance and Hatcheries

    Article • Microorganisms, April 2021, MDPI AG

    Constantinos C Papagiannitsis

  10. Genetic Plurality of OXA/NDM-Encoding Features Characterized From Enterobacterales Recovered From Czech Hospitals

    Article • Frontiers in Microbiology, February 2021, Frontiers

    Constantinos C Papagiannitsis

  11. Characterization of the Complete Nucleotide Sequences of mcr-1-Encoding Plasmids From Enterobacterales Isolates in Retailed Raw Meat Products From the Czech Republic

    Article • Frontiers in Microbiology, January 2021, Frontiers

    Constantinos C Papagiannitsis

  12. Letter to the Editor: Implementation of the Rapid Polymyxin Acinetobacter Test to Detect Colistin-Resistant Acinetobacter baumannii

    Article • Microbial Drug Resistance, January 2021, SAGE Publications

    Constantinos C Papagiannitsis

  13. Detection of Five mcr-9 -Carrying Enterobacterales Isolates in Four Czech Hospitals

    Article • mSphere, December 2020, ASM Journals

    Constantinos C Papagiannitsis

  14. Carbapenemase-Producing Gram-Negative Bacteria from American Crows in the United States

    Article • Antimicrobial Agents and Chemotherapy, December 2020, ASM Journals

    Constantinos C Papagiannitsis

  15. Unravelling the Features of Success of VIM-Producing ST111 and ST235 Pseudomonas aeruginosa in a Greek Hospital

    Article • Microorganisms, November 2020, MDPI AG

    Constantinos C Papagiannitsis

  16. First description of ST409 OXA-23-producing Acinetobacter baumannii, carrying a CST8 CRISPR/Cas system, in Central Greece

    Article • Journal of Global Antimicrobial Resistance, September 2020, Elsevier

    Constantinos C Papagiannitsis

  17. Frequency of mutations associated with resistance to first- and second-line drugs in multidrug-resistant Mycobacterium tuberculosis isolates

    Article • Journal of Global Antimicrobial Resistance, September 2020, Elsevier

    Constantinos C Papagiannitsis

  18. Insufficient repeatability and reproducibility of MALDI-TOF MS-based identification of MRSA

    Article • Folia Microbiologica, July 2020, Springer Science + Business Media

    Constantinos C Papagiannitsis

  19. Whole genome sequencing of macrolide resistant Streptococcus pneumoniae serotype 19A sequence type 416

    Article • February 2020, Research Square

    Constantinos C Papagiannitsis

  20. Ceftazidime-Avibactam To Treat Life-Threatening Infections by Carbapenem-Resistant Pathogens in Critically Ill Mechanically Ventilated Patients

    Article • Antimicrobial Agents and Chemotherapy, February 2020, ASM Journals

    Constantinos C Papagiannitsis

  21. Implementation of the Rapid Polymyxin™ NP test directly to positive blood cultures bottles

    Article • Diagnostic Microbiology and Infectious Disease, December 2019, Elsevier

    Constantinos C Papagiannitsis

  22. IncC blaKPC-2-positive plasmid characterised from ST648 Escherichia coli

    Article • Journal of Global Antimicrobial Resistance, December 2019, Elsevier

    Constantinos C Papagiannitsis

  23. Combination of mass spectrometry and DNA sequencing for detection of antibiotic resistance in diagnostic laboratories

    Article • Folia Microbiologica, November 2019, Springer Science + Business Media

    Constantinos C Papagiannitsis

  24. Antimicrobial Agent Susceptibility and Typing of Staphylococcal Isolates from Subclinical Mastitis in Ewes

    Article • Microbial Drug Resistance, September 2019, SAGE Publications

    Constantinos C Papagiannitsis

  25. First detection of an optrA-positive, linezolid-resistant ST16 Enterococcus faecalis from human in Greece

    Article • New Microbes and New Infections, May 2019, Elsevier

    Constantinos C Papagiannitsis

  26. MLS B -Resistant Staphylococcus aureus in Central Greece: Rate of Resistance and Molecular Characterization

    Article • Microbial Drug Resistance, May 2019, SAGE Publications

    Constantinos C Papagiannitsis

  27. Detection in Greece of a clinical Enterococcus faecium isolate carrying the novel oxazolidinone resistance gene poxtA

    Article • Journal of Antimicrobial Chemotherapy, April 2019, Oxford University Press (OUP)

    Constantinos C Papagiannitsis

  28. Resistance of Staphylococci to Macrolides-Lincosamides- Streptogramins B (MLSB): Epidemiology and Mechanisms of Resistance

    Article • March 2019, IntechOpen

    Constantinos C Papagiannitsis

  29. Antimicrobial susceptibility and mechanisms of resistance of Greek Clostridium difficile clinical isolates

    Article • Journal of Global Antimicrobial Resistance, March 2019, Elsevier

    Constantinos C Papagiannitsis

  30. Evaluation of rapid polymyxin NP test to detect colistin-resistant Klebsiella pneumoniae isolated in a tertiary Greek hospital

    Article • Journal of Microbiological Methods, October 2018, Elsevier

    Constantinos C Papagiannitsis

  31. Plasmid-mediated resistance is going wild

    Article • Plasmid, September 2018, Elsevier

    Constantinos C Papagiannitsis

  32. Corrigendum: Molecular characterization of serogroup 19 Streptococcus pneumoniae in the Czech Republic in the post-vaccine era

    Article • Journal of Medical Microbiology, August 2018, Society for General Microbiology

    Constantinos C Papagiannitsis

  33. Characterization of NDM-Encoding Plasmids From Enterobacteriaceae Recovered From Czech Hospitals

    Article • Frontiers in Microbiology, July 2018, Frontiers

    Constantinos C Papagiannitsis

  34. Characterization of pEncl-30969cz, a novel ColE1-like plasmid encoding VIM-1 carbapenemase, from an Enterobacter cloacae sequence type 92 isolate

    Article • Diagnostic Microbiology and Infectious Disease, June 2018, Elsevier

    Constantinos C Papagiannitsis

  35. Characterization of blaKPC-3-positive plasmids from an Enterobacter aerogenes isolated from a corvid in Canada

    Article • Journal of Antimicrobial Chemotherapy, June 2018, Oxford University Press (OUP)

    Constantinos C Papagiannitsis

  36. Characterisation of a ST100 Staphylococcus epidermidis producing an LnuB nucleotidyltransferase: Evidence for interspecies spread of an lnuB -carrying transposon

    Article • Journal of Global Antimicrobial Resistance, June 2018, Elsevier

    Constantinos C Papagiannitsis

  37. First Description in Greece of mphC-Positive Staphylococci Causing Subclinical Mastitis in Ewes

    Article • Microbial Drug Resistance, February 2018, Mary Ann Liebert Inc

    Constantinos C Papagiannitsis

  38. Sequences of IMP-4-encoding plasmids

    Article • Antimicrobial Agents and Chemotherapy, February 2018, ASM Journals

    Constantinos C Papagiannitsis

  39. Emergence of sequence type 252 Enterobacter cloacae producing GES-5 carbapenemase in a Czech hospital

    Article • Diagnostic Microbiology and Infectious Disease, February 2018, Elsevier

    Constantinos C Papagiannitsis

  40. Validation of a novel automatic deposition of bacteria and yeasts on MALDI target for MALDI-TOF MS-based identification using MALDI Colonyst robot

    Article • PLOS One, December 2017, PLOS

    Constantinos C Papagiannitsis

  41. Characterization of KPC-Encoding Plasmids from Enterobacteriaceae Isolated in a Czech Hospital

    Article • Antimicrobial Agents and Chemotherapy, December 2017, ASM Journals

    Constantinos C Papagiannitsis

  42. First description in Europe of the emergence of Enterococcus faecium ST117 carrying both vanA and vanB genes, isolated in Greece

    Article • Journal of Global Antimicrobial Resistance, December 2017, Elsevier

    Constantinos C Papagiannitsis

  43. First description of the emergence of Enterobacter asburiae producing IMI-2 carbapenemase in the Czech Republic

    Article • Journal of Global Antimicrobial Resistance, December 2017, Elsevier

    Constantinos C Papagiannitsis

  44. Molecular Characterization of Carbapenemase-Producing Pseudomonas aeruginosa of Czech Origin and Evidence for Clonal Spread of Extensively Resistant Sequence Type 357 Expressing IMP-7 Metallo-β-Lactamase

    Article • Antimicrobial Agents and Chemotherapy, October 2017, ASM Journals

    Constantinos C Papagiannitsis

  45. Characterization of the Complete Nucleotide Sequences of IncA/C2 Plasmids Carrying In809-Like Integrons from Enterobacteriaceae Isolates of Wildlife Origin

    Article • Antimicrobial Agents and Chemotherapy, July 2017, ASM Journals

    Constantinos C Papagiannitsis

  46. Comparison of imipenem and meropenem antibiotics for the MALDI-TOF MS detection of carbapenemase activity

    Article • Journal of Microbiological Methods, June 2017, Elsevier

    Constantinos C Papagiannitsis

  47. Complete Nucleotide Sequences of Two VIM-1-Encoding Plasmids from Klebsiella pneumoniae and Leclercia adecarboxylata Isolates of Czech Origin

    Article • Antimicrobial Agents and Chemotherapy, March 2017, ASM Journals

    Constantinos C Papagiannitsis

  48. attI1 -Located Small Open Reading Frames ORF-17 and ORF-11 in a Class 1 Integron Affect Expression of a Gene Cassette Possessing a Canonical Shine-Dalgarno Sequence

    Article • Antimicrobial Agents and Chemotherapy, March 2017, ASM Journals

    Constantinos C Papagiannitsis

  49. Emergence of sequence type 11 Klebsiella pneumoniae coproducing NDM-1 and VIM-1 metallo-β-lactamases in a Greek hospital

    Article • Diagnostic Microbiology and Infectious Disease, March 2017, Elsevier

    Constantinos C Papagiannitsis

  50. Molecular Characterization of OXA-48-Like-Producing Enterobacteriaceae in the Czech Republic and Evidence for Horizontal Transfer of pOXA-48-Like Plasmids

    Article • Antimicrobial Agents and Chemotherapy, November 2016, ASM Journals

    Constantinos C Papagiannitsis

  51. Characterization of KPC-encoding plasmids from two endemic settings, Greece and Italy

    Article • Journal of Antimicrobial Chemotherapy, June 2016, Oxford University Press (OUP)

    Tommaso Giani, Constantinos C Papagiannitsis

  52. Characterisation of IncA/C2 plasmids carrying an In416-like integron with the blaVIM-19 gene from Klebsiella pneumoniae ST383 of Greek origin

    Article • International Journal of Antimicrobial Agents, February 2016, Elsevier

    Constantinos C Papagiannitsis

  53. Detection of β-Lactamases and Their Activity Using MALDI-TOF MS

    Article • January 2016, Springer Science + Business Media

    Constantinos C Papagiannitsis

  54. Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometry for Determination of Resistance to Antibiotics

    Article • January 2016, Caister Academic Press

    Constantinos C Papagiannitsis

  55. Rapid dissemination of colistin and carbapenem resistant Acinetobacter baumannii in Central Greece: mechanisms of resistance, molecular identification and epidemiological data

    Article • BMC Infectious Diseases, December 2015, Springer Science + Business Media

    Constantinos C Papagiannitsis

  56. Report on a transborder spread of carbapenemase-producing bacteria by a patient injured during Euromaidan, Ukraine

    Article • New Microbes and New Infections, November 2015, Elsevier

    Constantinos C Papagiannitsis

  57. Biochemical Characterization of VIM-39, a VIM-1-Like Metallo-β-Lactamase Variant from a Multidrug-Resistant Klebsiella pneumoniae Isolate from Greece

    Article • Antimicrobial Agents and Chemotherapy, September 2015, ASM Journals

    Constantinos C Papagiannitsis

  58. Characterization of pKP-M1144, a Novel ColE1-Like Plasmid Encoding IMP-8, GES-5, and BEL-1 β-Lactamases, from a Klebsiella pneumoniae Sequence Type 252 Isolate

    Article • Antimicrobial Agents and Chemotherapy, June 2015, ASM Journals

    Constantinos C Papagiannitsis

  59. Survey of metallo-β-lactamase-producing Enterobacteriaceae colonizing patients in European ICUs and rehabilitation units, 2008–11

    Article • Journal of Antimicrobial Chemotherapy, March 2015, Oxford University Press (OUP)

    Constantinos C Papagiannitsis

  60. Matrix-Assisted Laser Desorption Ionization–Time of Flight Mass Spectrometry Meropenem Hydrolysis Assay with NH4HCO3, a Reliable Tool for Direct Detection of Carbapenemase Activity

    Article • Journal of Clinical Microbiology, February 2015, ASM Journals

    Constantinos C Papagiannitsis

  61. High Prevalence of ST131 Among CTX-M-Producing Escherichia coli from Community-Acquired Infections, in the Czech Republic

    Article • Microbial Drug Resistance, February 2015, Mary Ann Liebert Inc

    Constantinos C Papagiannitsis

  62. Complete Nucleotide Sequences of Two NDM-1-Encoding Plasmids from the Same Sequence Type 11 Klebsiella pneumoniae Strain

    Article • Antimicrobial Agents and Chemotherapy, November 2014, ASM Journals

    Constantinos C Papagiannitsis

  63. Enteric fever imported to the Czech Republic: epidemiology, clinical characteristics and antimicrobial susceptibility

    Article • Folia Microbiologica, November 2014, Springer Science + Business Media

    Constantinos C Papagiannitsis

  64. Detection of OXA-48-type carbapenemase-producing Enterobacteriaceae in diagnostic laboratories can be enhanced by addition of bicarbonates to cultivation media or reaction buffers

    Article • Folia Microbiologica, September 2014, Springer Science + Business Media

    Constantinos C Papagiannitsis

  65. Detection of carbapenemases in Enterobacteriaceae: a challenge for diagnostic microbiological laboratories

    Article • Clinical Microbiology and Infection, September 2014, Elsevier

    Constantinos C Papagiannitsis

  66. Identification of CMY-2-Type Cephalosporinases in Clinical Isolates of Enterobacteriaceae by MALDI-TOF MS

    Article • Antimicrobial Agents and Chemotherapy, February 2014, ASM Journals

    Constantinos C Papagiannitsis

  67. Carbapenemase-producing Klebsiella pneumoniae in the Czech Republic in 2011

    Article • Eurosurveillance, November 2013, European Centre for Disease Control and Prevention (ECDC)

    Constantinos C Papagiannitsis

  68. OmpK35 and OmpK36 porin variants associated with specific sequence types ofKlebsiella pneumoniae

    Article • Journal of Chemotherapy, August 2013, Taylor & Francis

    Constantinos C Papagiannitsis, Dr Stathis D. Kotsakis

  69. Molecular characterization of metallo-β-lactamase-producing Pseudomonas aeruginosa in a Czech hospital (2009–2011)

    Article • Journal of Medical Microbiology, June 2013, Society for General Microbiology

    Constantinos C Papagiannitsis

  70. Characterization of pKP1780, a novel IncR plasmid from the emerging Klebsiella pneumoniae ST147, encoding the VIM-1 metallo-β-lactamase

    Article • Journal of Antimicrobial Chemotherapy, May 2013, Oxford University Press (OUP)

    Constantinos C Papagiannitsis

  71. Characterization of pKP1433, a Novel KPC-2-Encoding Plasmid from Klebsiella pneumoniae Sequence Type 340

    Article • Antimicrobial Agents and Chemotherapy, April 2013, ASM Journals

    Constantinos C Papagiannitsis

  72. Identification of a New Delhi metallo-β-lactamase-4 (NDM-4)-producing Enterobacter cloacae from a Czech patient previously hospitalized in Sri Lanka

    Article • Folia Microbiologica, April 2013, Springer Science + Business Media

    Constantinos C Papagiannitsis

  73. Isolation from a Nonclinical Sample of Leclercia adecarboxylata Producing a VIM-1 Metallo-β-Lactamase

    Article • Antimicrobial Agents and Chemotherapy, March 2013, ASM Journals

    Constantinos C Papagiannitsis

  74. Characterization of a Transmissible Plasmid Encoding VEB-1 and VIM-1 in Proteus mirabilis

    Article • Antimicrobial Agents and Chemotherapy, April 2012, ASM Journals

    Constantinos C Papagiannitsis

  75. Diversity of acquired β-lactamases amongst Klebsiella pneumoniae in Greek hospitals

    Article • International Journal of Antimicrobial Agents, February 2012, Elsevier

    Constantinos C Papagiannitsis

  76. Rapid Typing of Extended-Spectrum  -Lactamase- and Carbapenemase-Producing Escherichia coli and Klebsiella pneumoniae Isolates by Use of SpectraCell RA

    Article • Journal of Clinical Microbiology, January 2012, ASM Journals

    Constantinos C Papagiannitsis

  77. An update of the evolving epidemic of blaKPC-2-carrying Klebsiella pneumoniae in Greece (2009-10)

    Article • Journal of Antimicrobial Chemotherapy, May 2011, Oxford University Press (OUP)

    Constantinos C Papagiannitsis

  78. Characterization of Metallo-β-Lactamase VIM-27, an A57S Mutant of VIM-1 Associated with Klebsiella pneumoniae ST147

    Article • Antimicrobial Agents and Chemotherapy, April 2011, ASM Journals

    Constantinos C Papagiannitsis

  79. Emergence of Klebsiella pneumoniae of a novel sequence type (ST383) producing VIM-4, KPC-2 and CMY-4 β-lactamases

    Article • International Journal of Antimicrobial Agents, December 2010, Elsevier

    Constantinos C Papagiannitsis

  80. Detection of metallo-β-lactamase genes in clinical specimens by a commercial multiplex PCR system

    Article • Journal of Microbiological Methods, November 2010, Elsevier

    Constantinos C Papagiannitsis

  81. Sequence of pR3521, an IncB Plasmid fromEscherichia coliEncoding ACC-4, SCO-1, and TEM-1 β-Lactamases

    Article • Antimicrobial Agents and Chemotherapy, October 2010, ASM Journals

    Constantinos C Papagiannitsis

  82. Sequence of pNL194, a 79.3-Kilobase IncN Plasmid Carrying the blaVIM-1 Metallo-β-Lactamase Gene in Klebsiella pneumoniae

    Article • Antimicrobial Agents and Chemotherapy, July 2010, ASM Journals

    Constantinos C Papagiannitsis

  83. An Ertapenem-Resistant Extended-Spectrum-β-Lactamase-Producing Klebsiella pneumoniae Clone Carries a Novel OmpK36 Porin Variant

    Article • Antimicrobial Agents and Chemotherapy, July 2010, ASM Journals

    Constantinos C Papagiannitsis

  84. GES-13, a β-Lactamase Variant Possessing Lys-104 and Asn-170 in Pseudomonas aeruginosa

    Article • Antimicrobial Agents and Chemotherapy, January 2010, ASM Journals

    Constantinos C Papagiannitsis

  85. Detecting VIM-1 Production in Proteus mirabilis by an Imipenem-Dipicolinic Acid Double Disk Synergy Test

    Article • Journal of Clinical Microbiology, December 2009, ASM Journals

    Constantinos C Papagiannitsis

  86. Emerging Klebsiella pneumoniae Isolates Coproducing KPC-2 and VIM-1 Carbapenemases

    Article • Antimicrobial Agents and Chemotherapy, July 2009, ASM Journals

    Constantinos C Papagiannitsis

  87. Extended-Spectrum Properties of CMY-30, a Val211Gly Mutant of CMY-2 Cephalosporinase

    Article • Antimicrobial Agents and Chemotherapy, May 2009, ASM Journals

    Constantinos C Papagiannitsis

  88. Emergence of Serratia liquefaciens and Klebsiella oxytoca with metallo-β-lactamase-encoding IncW plasmids: further spread of the blaVIM-1-carrying integron In-e541

    Article • International Journal of Antimicrobial Agents, December 2008, Elsevier

    Constantinos C Papagiannitsis

  89. Relative Strengths of the Class 1 Integron Promoter Hybrid 2 and the Combinations of Strong and Hybrid 1 with an Active P2 Promoter

    Article • Antimicrobial Agents and Chemotherapy, November 2008, ASM Journals

    Constantinos C Papagiannitsis

  90. Plasmid-Encoded ACC-4, an Extended-Spectrum Cephalosporinase Variant from Escherichia coli

    Article • Antimicrobial Agents and Chemotherapy, July 2007, ASM Journals

    Constantinos C Papagiannitsis

  91. SCO-1, a Novel Plasmid-Mediated Class A β-Lactamase with Carbenicillinase Characteristics from Escherichia coli

    Article • Antimicrobial Agents and Chemotherapy, March 2007, ASM Journals

    Constantinos C Papagiannitsis

  92. P861 ECL-1, a novel plasmid-mediated class A β-lactamase with carbenicillinase characteristics from Escherichia coli

    Article • International Journal of Antimicrobial Agents, March 2007, Elsevier

    Constantinos C Papagiannitsis