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Epidemiological Investigation of Legionella pneumophila Serogroup 2 to 14 Isolates from Water Samples by Amplified Fragment Length Polymorphism and Sequence-Based Typing and Detection of Virulence Traits.

Katsiaflaka A, Pournaras S, Kristo I, Mouchtouri VA, Kyritsi M, Velonakis E, Vatopoulos AC, Hadjichristodoulou C.

Appl Environ Microbiol. 2016 Sep 30;82(20):6102-6108. Print 2016 Oct 15.


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

Papagiannitsis CC, Di Pilato V, Giani T, Giakkoupi P, Riccobono E, Landini G, Miriagou V, Vatopoulos AC, Rossolini GM.

J Antimicrob Chemother. 2016 Oct;71(10):2824-30. doi: 10.1093/jac/dkw227. Epub 2016 Jun 21.


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

Papagiannitsis CC, Dolejska M, Izdebski R, Giakkoupi P, Skálová A, Chudějová K, Dobiasova H, Vatopoulos AC, Derde LP, Bonten MJ, Gniadkowski M, Hrabák J.

Int J Antimicrob Agents. 2016 Feb;47(2):158-62. doi: 10.1016/j.ijantimicag.2015.12.001. Epub 2015 Dec 19.


OmpK35 and OmpK36 porin variants associated with specific sequence types of Klebsiella pneumoniae.

Papagiannitsis CC, Giakkoupi P, Kotsakis SD, Tzelepi E, Tzouvelekis LS, Vatopoulos AC, Miriagou V.

J Chemother. 2013 Aug;25(4):250-4. doi: 10.1179/1973947813Y.0000000075. No abstract available.


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

Papagiannitsis CC, Miriagou V, Giakkoupi P, Tzouvelekis LS, Vatopoulos AC.

J Antimicrob Chemother. 2013 Oct;68(10):2259-62. doi: 10.1093/jac/dkt196. Epub 2013 May 27.


Antimicrobial activity of prulifloxacin in comparison with other fluoroquinolones against community-acquired urinary and respiratory pathogens isolated in Greece.

Karageorgopoulos DE, Maraki S, Vatopoulos AC, Samonis G, Schito GC, Falagas ME.

Eur J Clin Microbiol Infect Dis. 2013 Nov;32(11):1417-22. doi: 10.1007/s10096-013-1891-z. Epub 2013 May 19.


Characterization of pKP1433, a novel KPC-2-encoding plasmid from Klebsiella pneumoniae sequence type 340.

Papagiannitsis CC, Miriagou V, Giakkoupi P, Tzouvelekis LS, Vatopoulos AC.

Antimicrob Agents Chemother. 2013 Jul;57(7):3427-9. doi: 10.1128/AAC.00054-13. Epub 2013 Apr 29.


Dissemination of blaVIM in Greece at the peak of the epidemic of 2005-2006: clonal expansion of Klebsiella pneumoniae clonal complex 147.

Hasan CM, Turlej-Rogacka A, Vatopoulos AC, Giakkoupi P, Maâtallah M, Giske CG.

Clin Microbiol Infect. 2014 Jan;20(1):34-7. doi: 10.1111/1469-0691.12187. Epub 2013 Mar 7.


Characterization of a transmissible plasmid encoding VEB-1 and VIM-1 in Proteus mirabilis.

Papagiannitsis CC, Miriagou V, Kotsakis SD, Tzelepi E, Vatopoulos AC, Petinaki E, Tzouvelekis LS.

Antimicrob Agents Chemother. 2012 Jul;56(7):4024-5. doi: 10.1128/AAC.00470-12. Epub 2012 Apr 30. No abstract available.


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

Papagiannitsis CC, Tryfinopoulou K, Giakkoupi P, Pappa O, Polemis M, Tzelepi E, Tzouvelekis LS; Carbapenemase Study Group, Vatopoulos AC.

Int J Antimicrob Agents. 2012 Feb;39(2):178-80. doi: 10.1016/j.ijantimicag.2011.09.024. Epub 2011 Nov 21. No abstract available.


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

Giakkoupi P, Papagiannitsis CC, Miriagou V, Pappa O, Polemis M, Tryfinopoulou K, Tzouvelekis LS, Vatopoulos AC.

J Antimicrob Chemother. 2011 Jul;66(7):1510-3. doi: 10.1093/jac/dkr166. Epub 2011 May 4.


Characterization of metallo-beta-lactamase VIM-27, an A57S mutant of VIM-1 associated with Klebsiella pneumoniae ST147.

Papagiannitsis CC, Kotsakis SD, Petinaki E, Vatopoulos AC, Tzelepi E, Miriagou V, Tzouvelekis LS.

Antimicrob Agents Chemother. 2011 Jul;55(7):3570-2. doi: 10.1128/AAC.00238-11. Epub 2011 Apr 25.


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

Papagiannitsis CC, Giakkoupi P, Vatopoulos AC, Tryfinopoulou K, Miriagou V, Tzouvelekis LS.

Int J Antimicrob Agents. 2010 Dec;36(6):573-4. doi: 10.1016/j.ijantimicag.2010.07.018. Epub 2010 Sep 21. No abstract available.


Emerging Klebsiella pneumoniae isolates coproducing KPC-2 and VIM-1 carbapenemases.

Giakkoupi P, Pappa O, Polemis M, Vatopoulos AC, Miriagou V, Zioga A, Papagiannitsis CC, Tzouvelekis LS.

Antimicrob Agents Chemother. 2009 Sep;53(9):4048-50. doi: 10.1128/AAC.00690-09. Epub 2009 Jul 6. No abstract available.


Panton-Valentine leukocidin-positive methicillin-resistant Staphylococcus aureus outbreak among healthcare workers in a long-term care facility.

Maltezou HC, Vourli S, Katerelos P, Maragos A, Kotsalidou S, Remoudaki E, Papadimitriou T, Vatopoulos AC.

Int J Infect Dis. 2009 Nov;13(6):e401-6. doi: 10.1016/j.ijid.2009.02.004. Epub 2009 Apr 22.


Outbreak of infections due to KPC-2-producing Klebsiella pneumoniae in a hospital in Crete (Greece).

Maltezou HC, Giakkoupi P, Maragos A, Bolikas M, Raftopoulos V, Papahatzaki H, Vrouhos G, Liakou V, Vatopoulos AC.

J Infect. 2009 Mar;58(3):213-9. doi: 10.1016/j.jinf.2009.01.010. Epub 2009 Feb 26.


A multiresistant Klebsiella pneumoniae clinical isolate carrying both CTX-M-15 and VIM-1 beta-lactamases, harboured by different plasmids.

Giakkoupi P, Vourli S, Vatopoulos AC, Kanellopoulou M, Papafrangas E, Raitsiu B.

Int J Antimicrob Agents. 2009 Feb;33(2):191-2. doi: 10.1016/j.ijantimicag.2008.08.008. Epub 2008 Oct 23. No abstract available.


Supplementation of growth media with Zn2+ facilitates detection of VIM-2-producing Pseudomonas aeruginosa.

Giakkoupi P, Vourli S, Polemis M, Kalapothaki V, Tzouvelekis LS, Vatopoulos AC.

J Clin Microbiol. 2008 Apr;46(4):1568-9. doi: 10.1128/JCM.02345-07. Epub 2008 Feb 20. No abstract available.


Antimicrobial resistance of Esherichia coli urinary isolates from primary care patients in Greece.

Falagas ME, Polemis M, Alexiou VG, Marini-Mastrogiannaki A, Kremastinou J, Vatopoulos AC.

Med Sci Monit. 2008 Feb;14(2):CR75-79.


Trends in antimicrobial resistance of Acinetobacter baumannii clinical isolates from hospitalised patients in Greece and treatment implications.

Falagas ME, Mourtzoukou EG, Polemis M, Vatopoulos AC; Greek System for Surveillance of Antimicrobial Resistance.

Clin Microbiol Infect. 2007 Aug;13(8):816-9.


Correlation between bacterial indicators and bacteriophages in sewage and sludge.

Mandilara GD, Smeti EM, Mavridou AT, Lambiri MP, Vatopoulos AC, Rigas FP.

FEMS Microbiol Lett. 2006 Oct;263(1):119-26.


Sources of diversity of carbapenem resistance levels in Klebsiella pneumoniae carrying blaVIM-1.

Loli A, Tzouvelekis LS, Tzelepi E, Carattoli A, Vatopoulos AC, Tassios PT, Miriagou V.

J Antimicrob Chemother. 2006 Sep;58(3):669-72. Epub 2006 Jul 26.


Emergence of Proteus mirabilis carrying the bla metallo-beta-lactamase gene.

Vourli S, Tsorlini H, Katsifa H, Polemis M, Tzouvelekis LS, Kontodimou A, Vatopoulos AC.

Clin Microbiol Infect. 2006 Jul;12(7):691-4.


Transferable DHA-1 cephalosporinase in Escherichia coli.

Giakkoupi P, Tambic-Andrasevic A, Vourli S, Skrlin J, Sestan-Crnek S, Tzouvelekis LS, Vatopoulos AC.

Int J Antimicrob Agents. 2006 Jan;27(1):77-80. Epub 2005 Dec 13.


Repeated occurrence of diverse extended-spectrum beta-lactamases in minor serotypes of food-borne Salmonella enterica subsp. enterica.

Politi L, Tassios PT, Lambiri M, Kansouzidou A, Pasiotou M, Vatopoulos AC, Mellou K, Legakis NJ, Tzouvelekis LS.

J Clin Microbiol. 2005 Jul;43(7):3453-6.


Discrepancies and interpretation problems in susceptibility testing of VIM-1-producing Klebsiella pneumoniae isolates.

Giakkoupi P, Tzouvelekis LS, Daikos GL, Miriagou V, Petrikkos G, Legakis NJ, Vatopoulos AC.

J Clin Microbiol. 2005 Jan;43(1):494-6.


CMY-13, a novel inducible cephalosporinase encoded by an Escherichia coli plasmid.

Miriagou V, Tzouvelekis LS, Villa L, Lebessi E, Vatopoulos AC, Carattoli A, Tzelepi E.

Antimicrob Agents Chemother. 2004 Aug;48(8):3172-4.


Novel GES/IBC extended-spectrum beta-lactamase variants with carbapenemase activity in clinical enterobacteria.

Vourli S, Giakkoupi P, Miriagou V, Tzelepi E, Vatopoulos AC, Tzouvelekis LS.

FEMS Microbiol Lett. 2004 May 15;234(2):209-13.


Quinolone resistance among Escherichia coli strains from community-acquired urinary tract infections in Greece.

Chaniotaki S, Giakouppi P, Tzouvelekis LS, Panagiotakos D, Kozanitou M, Petrikkos G, Avlami A, Vatopoulos AC; WHONET Study Group.

Clin Microbiol Infect. 2004 Jan;10(1):75-8.


Prevalence and characterization of the mechanisms of macrolide, lincosamide and streptogramin resistance in viridans group streptococci.

Ioannidou S, Papaparaskevas J, Tassios PT, Foustoukou M, Legakis NJ, Vatopoulos AC.

Int J Antimicrob Agents. 2003 Dec;22(6):626-9.


In vitro activity of telithromycin (HMR 3647) against Greek Streptococcus pyogenes and Streptococcus pneumoniae clinical isolates with different macrolide susceptibilities.

Ioannidou S, Tassios PT, Zachariadou L, Salem Z, Kanelopoulou M, Kanavaki S, Chronopoulou G, Petropoulou N, Foustoukou M, Pangalis A, Trikka-Graphakos E, Papafraggas E, Vatopoulos AC.

Clin Microbiol Infect. 2003 Jul;9(7):704-7.


VIM-1 Metallo-beta-lactamase-producing Klebsiella pneumoniae strains in Greek hospitals.

Giakkoupi P, Xanthaki A, Kanelopoulou M, Vlahaki A, Miriagou V, Kontou S, Papafraggas E, Malamou-Lada H, Tzouvelekis LS, Legakis NJ, Vatopoulos AC.

J Clin Microbiol. 2003 Aug;41(8):3893-6.


Extended-spectrum beta-lactamase types in Klebsiella pneumoniae and Escherichia coli in two Greek hospitals.

Tzelepi E, Magana Ch, Platsouka E, Sofianou D, Paniara O, Legakis NJ, Vatopoulos AC, Tzouvelekis LS.

Int J Antimicrob Agents. 2003 Mar;21(3):285-8.


European Antimicrobial Resistance Surveillance System (EARSS): objectives and organisation.

Bronzwaer SL, Goettsch W, Olsson-Liljequist B, Wale MC, Vatopoulos AC, Sprenger MJ.

Euro Surveill. 1999 Apr;4(4):41-44.


Spread of integron-associated VIM-type metallo-beta-lactamase genes among imipenem-nonsusceptible Pseudomonas aeruginosa strains in Greek hospitals.

Giakkoupi P, Petrikkos G, Tzouvelekis LS, Tsonas S, Legakis NJ, Vatopoulos AC; WHONET Greece Study Group.

J Clin Microbiol. 2003 Feb;41(2):822-5.


Epidemiology of multiresistant Enterococcus avium isolates in a Greek tertiary care hospital.

Papaparaskevas J, Tassios PT, Kalapothaki V, Avlami A, Legakis NJ, Vatopoulos AC.

Int J Antimicrob Agents. 2002 Dec;20(6):432-7.


High rates of antibiotic resistance among normal fecal flora Escherichia coli isolates in children from Greece.

Vatopoulos AC, Varvaresou E, Petridou E, Moustaki M, Kyriakopoulos M, Kapogiannis D, Sarafoglou S, Fretzagias A, Kalapothaki V.

Clin Microbiol Infect. 1998;4(10):563-569.


Multiple clones within multidrug-resistant Salmonella enterica serotype Typhimurium phage type DT104. The Greek Nontyphoidal Salmonella Study Group.

Markogiannakis A, Tassios PT, Lambiri M, Ward LR, Kourea-Kremastinou J, Legakis NJ, Vatopoulos AC.

J Clin Microbiol. 2000 Mar;38(3):1269-71.


A multi-centre study of nosocomial methicillin-resistant Staphylococcus aureus in Greece. Greek MRSA Study Group.

Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Maniatis AN, Vatopoulos AC, Legakis NJ.

Int J Antimicrob Agents. 1999 Jul;12(2):115-9.


Rare case of failure by an automated system to detect extended-spectrum beta-lactamase in a cephalosporin-resistant Klebsiella pneumoniae isolate.

Tzouvelekis LS, Vatopoulos AC, Katsanis G, Tzelepi E.

J Clin Microbiol. 1999 Jul;37(7):2388. No abstract available.


Reduced susceptibility to vancomycin of nosocomial isolates of methicillin-resistant Staphylococcus aureus.

Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Legakis NJ, Vatopoulos AC.

J Antimicrob Chemother. 1999 May;43(5):729-31.


Susceptibility testing of Klebsiella spp.--an international collaborative study in quality assessment.

Jenks PJ, Akalin E, Bergan T, Dornbusch K, Howard AJ, Hryniewicz W, Jones JR, King A, McLaughlin JC, Ozkuyumcu C, Percival A, Phillips I, Reeves DS, Spencer R, Vatopoulos AC, Warren R, Williams JD.

J Antimicrob Chemother. 1998 Jul;42(1):29-48.


Molecular analysis of ampicillin-resistant sporadic Salmonella typhi and Salmonella paratyphi B clinical isolates.

Tassios PT, Vatopoulos AC, Mainas E, Gennimata D, Papadakis J, Tsiftsoglou A, Kalapothaki V, Legakis NJ.

Clin Microbiol Infect. 1997 Jun;3(3):317-323.


Molecular epidemiology of antibiotic resistance of Salmonella enteritidis during a 7-year period in Greece.

Tassios PT, Markogiannakis A, Vatopoulos AC, Katsanikou E, Velonakis EN, Kourea-Kremastinou J, Legakis NJ.

J Clin Microbiol. 1997 Jun;35(6):1316-21.


Multiresistant Pseudomonas aeruginosa serogroup O:11 outbreak in an intensive care unit.

Tassios PT, Gennimata V, Spaliara-Kalogeropoulou L, Kairis D, Koutsia C, Vatopoulos AC, Legakis NJ.

Clin Microbiol Infect. 1997 Feb;3(6):621-628.


Distinct genotypic clusters of heterogeneously and homogeneously methicillin-resistant Staphylococcus aureus from a Greek hospital.

Tassios PT, Vatopoulos AC, Xanthaki A, Mainas E, Goering RV, Legakis NJ.

Eur J Clin Microbiol Infect Dis. 1997 Feb;16(2):170-3.


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