1. Tassios PT, La Thangue NB. A multiplicity of differentiation-regulated ATF site binding activities in embryonal carcinoma cells have distinct sequence and promoter specificities. The New Biologist 1990; 2: 1123-1134.
2. Tassios PT, Gennimata V, Spaliara-Kalogeropoulou L, Kairis D, Koutsia C, Vatopoulos AC, Legakis NJ. Multi-resistant Pseudomonas aeruginosa O:11 outbreak in an intensive care unit. Clinical Microbiology and Infection 1997; 3: 621-628.
3. Tassios PT, Vatopoulos AC, Mainas E, Gennimata D, Papadakis J, Tsiftsoglou A, Kalapothaki V, Legakis NJ. Molecular analysis of ampicillin-resistant sporadic Salmonella typhi and Salmonella paratyphi B clinical isolates. Clin Microbiol Infect 1997, 3: 317-323.
4. Tassios PT, Markogiannakis A, Vatopoulos AC, Velonakis EN, Katsanikou K, Papadakis JA, Kourea-Kremastinou J, Legakis NJ. Molecular epidemiology of antibiotic resistance of Salmonella enteritidis during a 7-year period in Greece. J Clin Microbiol 1997; 35: 1316-1321.
5. Tassios PT, Vatopoulos AC, Xanthaki A, Mainas E, Goering RV, Legakis NJ. Distinct genotypic clusters of heterogeneously and homogeneously methicillin-resistant Staphylococcus aureus from a Greek hospital. Eur J Clin Microbiol Infect Dis 1997, 16: 170-173.
6. Kyriakopoulos AM, Tassios PT, Matsiota-Bernard P, Marinis E, Tsaousidou S, Legakis NJ. Characterization to species level of Mycobacterium avium complex strains from human immunodeficiendy virus-positive and –negative patients. J Clin Microbiol 1997, 35: 3001-3003.
7. Matsiota-Bernard P, Waser P, Tassios PT, Kyriakopoulos AM, Legakis NJ. Rapid discrimination of Mycobacterium avium strains from AIDS patients by randomly amplified polymorphic DNA analysis. J Clin Microbiol 1997; 35: 1585-1588.
8. van Belkum A, van Leeuwen W, Kaufmann ME, Cookson B, Forey F, Etienne J, Goering R, Tenover F, Steward C, O’Brien F, Grubb W, Tassios P, Legakis N, Morvan A, El Solh N, de Ryck R, Struelens M, Salmenlinna S, Vuopio-Varkila J, Koositra M, Talens A, Witte W, Verbrugh H. Assessment of resolution and intercenter reproducibility of results of genotyping Staphylococcus aureus by pulsed-field gel electrophoresis of SmaI macrorestriction fragments: a multicenter study. J Clin Microbiol 1998, 36: 1653-1659.
9. Tassios PT, Gennimata V, Maniatis AN, Fock C, Legakis NJ, and the Greek Pseudomonas aeruginosa Study Group. Emergence of multidrug resistance in ubiquitous and dominant Pseudomonas aeruginosa serogroup O:11. J Clin Microbiol 1998, 36: 897-901.
10. Fotopoulou Ν, Tsiplakou S, Maniatis AN, Pangali A, Kouppari G, Legakis NJ, Tassios PT. Gradual increase in the minimum inhibitory concentration of penicillin among both susceptible and resistant Streptococcus pneumoniae isolates from Greek children during 1995-1997. Ιnt J Antimicrob Agents 1999; 11: 53-57.
11. Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Legakis NJ, Vatopoulos AC. Reduced susceptibility to vancomycin of nosocomial methicillin-resistant Staphylococcus aureus isolates. J Antimicrob Chemother 1999; 43: 729-731.
12. Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Maniatis AN, Vatopoulos AC, Legakis NJ, and the Greek MRSA Study Group. A multi-center study of nosocomial methicillin-resistant Staphylococcus aureus in Greece. Ιnt J Antimicrob Agents 1999; 12: 115-119.
13. Hadjichristodoulou C, Nikolakopoulou E, Karabibis K, Karakou E, Markogiannakis A, Panoulis C, Lampiri M, Tassios P. Outbreak of Salmonella gastroenteritis among attendees of a restaurant opening ceremony in Greece, in June 1998. Eurosurveillance 1999; 4: 72-75.
14. Vassilogiannakopoulos A, Tassios P, Lampiri M. Salmonella blockley infection in Greece. Eurosurveillance Weekly 1999, 15: 990418. (http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=1425)
15. Tassios PT, Gazouli M, Tzelepi E, Milch H, Kozlova NS, Sidorenko SV, Legakis NJ, Tzouvelekis LS. Spread of a Salmonella typhimurium clone resistant to third generation cephalosporins in three European countries. J Clin Microbiol 1999, 37: 3774-7.
16. Giakkoupi P, Tzelepi E, Tassios PT, Legakis NJ, Tzouvelekis LS.Detrimental effect of the combination of R164S with G238S in TEM-1 β-lactamase on the extended-spectrum activity conferred by each single mutation. J Antimicrob Chemother 2000, 45: 101-104.
17. Kyriazi Z, Chatzipanagiotou S, Trikka-Graphakos E, Legakis NJ, Tassios PT. Serotyping, biotyping and genomic DNA XbaI restriction fragment analysis of Yersinia enterocolitica isolated from infected β-thalassaemic and non-thalassaemic children in Greece. Clin Microbiol Infect 2000, 6: 157-158.
18. Tassios PT, Chadjichristodoulou C, Lambiri M, Kansouzidou-Kanakoudi A, Sarandopoulou Z, Kourea-Kremastinou J, Tzouvelekis LS, Legakis NJ. Molecular typing of multi-drug resistant Salmonella blockley outbreak isolates from Greece. Emerg Infect Dis 1999, 6: 60-64.
19. Markogiannakis A, Tassios PT, Lambiri M, Ward LR, Kourea-Kremastinou J, Legakis NJ, Vatopoulos AC, and the Greek Non-Typhoidal Salmonella Study Group. Multiple Clones within Multidrug-Resistant Salmonella enterica Serotype Typhimurium Phage Type DT104. J Clin Microbiol. 2000, 38:1269-1271.
20. Papaparaskevas J, Vatopoulos A, Tassios PT, Avlami A, Legakis NJ, Kalapothaki V. Diversity among high-level aminoglycoside resistant enterococci. J Antimicrob Chemother 2000, 45:277-283.
21. Mavroidi A, Tzouvelekis LS, Tassios PT, Flemetakis A, Daniilidou M, Tzelepi E. Characterization of Neisseria gonorrhoeae strains with decreased susceptibility to fluroquinolones isolated in Greece from 1996 to 1999. J Clin Microbiol 2000, 38: 3489-3491.
22. Deplano A, Schuermans A, Van Eldere J, Witte W, Meugnier H, Etienne J, Grundmann H, Jonas D, Noordhoek GT, Dijkstra J, van Belkum A, van Leeuwen W, Tassios PT, Legakis NJ, van der Zee A, Bergmans A, Blanc DS, Tenover FC, Cookson BC, O'Neil G, Struelens MJ, and The European Study Group on Epidemiological Markers of the ESCMID. Multicenter evaluation of epidemiological typing of methicillin-resistant Staphylococcus aureus by repetitive-element PCR analysis. J Clin Microbiol 2000, 38: 3527-3533.
23. Deplano A, Tassios PT, Glupczynski Y, Godfroid E, Struelens MJ. In vivo deletion of the methicillin resistance mec region from the chromosome of Staphylococcus aureus strains. J Antimicrob Chemother 2000, 46:617-620.
24. Kyriakopoulos AM, Matsiota-Bernard P, Marinis E, Legakis NJ, Tassios PT. Comparison of Mycobacterium avium isolates from Greek AIDS and human immunodeficiency virus-negative patients by pulsed-field gel electrophoresis. Clin Microbiol Infect 2000, 6: 490-495.
25. Chung M, de Lencastre H, Matthews P, Tomasz A, and the Multilaboratory Project Collaborators – Adamsson I, Aires de Sousa M, Camou T, Cocuzza C, Corso A, Couto I, Dominguez A, Gniadkowski M, Goering R, Gomes A, Kikuchi K, Marchese A, Mato R, Melter O, Oliveira D, Palacio R, Sa-Leao R, Santos Sanches I, Song J-H, Tassios PT, Villari P. Molecular typing of methicillin-resistant Staphylococcus aureus by pulsed-field gel electrophoresis: comparison of results obtained in a multilaboratory effort using identical protocols and MRSA strains. Microb Drug Res 2000, 6: 189-198.
26. Ioannidou S, Tassios PT, Kotsovili-Tseleni A, Foustoukou M, Legakis NJ, Vatopoulos A. Antibiotic resistance rates and macrolide resistance phenotypes of viridans group streptococci from the oropharynx of healthy Greek children. Int J Antimicrob Agents 2001, 17: 195-201.
27. E. Lebessi, H. Dellagrammaticas, P.T. Tassios, L. S. Tzouvelekis, S. Ioannidou, M. Foustoukou, and N. J. Legakis. Extended-Spectrum ß-Lactamase-Producing Klebsiella pneumoniae in a Neonatal Intensive Care Unit in the High-Prevalence Area of Athens, Greece. J. Clin. Microbiol. 2002 40: 799-804.
28. Villa L, Mammina C, Miriagou V, Tzouvelekis LS, Tassios PT, Nastasi A, Carattoli A. Multidrug and Broad-Spectrum Cephalosporin Resistance among Salmonella enterica Serotype Enteritidis Clinical Isolates in Southern Italy. J Clin Microbiol 2002, 40:2662-2665.
29. Joseph Papaparaskevas, Panayotis T. Tassios, Victoria Kalapothaki, Athina Avlami, Nicholas J. Legakis and Alkiviadis C. Vatopoulos. Epidemiology of multiresistant Enterococcus avium isolates in a Greek tertiary care hospital. International Journal of Antimicrobial Agents 2002, 20: 432-437.
30. Tzouvelekis LS, Lukova V, Tassios PT, Fluit AC, Jones RN, Legakis NJ. Resistance to beta-lactams among blood isolates of Salmonella spp. in European hospitals: results from the SENTRY Αntimicrobial Surveillance Program 1997-98. Clin Microbiol Infect 2003, 9:149-152.
31. L. Zachariadou, J. Papaparaskevas, I. Paraskakis, A. Efstratiou, A. Pangalis, N. J. Legakis, P. T. Tassios. Predominance of two M-types among erythromycin-resistant group A Streptococci from Greek children. Clin Microbiol Infect 2003, 9: 310-314.
32. Stephen Murchan, Mary Elizabeth Kaufmann, Ariane Deplano, Raf de Ryck, Marc Struelens, Christina Elsberg Zinn, Vivian Fussing, Saara Salmenlinna, Jaana Vuopio-Varkila, Névine El Solh, Christina Cuny, Wolfgang Witte, Panayotis T. Tassios, Nikolas Legakis, Willem van Leeuwen, Alex van Belkum, Anna Vindel, Idoia Laconcha, Javier Garaizar, Saara Haeggman, Barbro Olsson-Liljequist, Ulrika Ransjo, Geoffrey Coombes, and Barry Cookson. Harmonization of Pulsed-Field Gel Electrophoresis Protocols for Epidemiological Typing of Strains of Methicillin-Resistant Staphylococcus aureus: a Single Approach Developed by Consensus in 10 European Laboratories and Its Application for Tracing the Spread of Related Strains J. Clin. Microbiol. 2003, 41: 1574-1585.
33. A.N. Maniatis, S. Pournaras, S. Orkopoulou, P.T. Tassios, N.J. Legakis and the Bacterial Resistance Study Group. Multiresistant Acinetobacter baumannii isolates in intensive care units in Greece. Clinical Microbiology & Infection 2003, 9: 547-553.
34. 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. In vitro activity of telithromycin (HMR 3647) against Greek Streptococcus pyogenes and Streptococcus pneumoniae clinical isolates with different macrolide susceptibilitie. Clinical Microbiology & Infection 2003, 9: 704-707.
35. Α. Tsakris, P.T. Tassios, F. Polydorou, A. Papa, E. Malaka, A. Antoniadis, N.J. Legakis. Infrequent detection of acquired metallo-β-lactamases among carbapenem-resistant Pseudomonas isolates in a Greek hospital. Clinical Microbiology and Infection 2003, 9: 846-851.
36. N. Fotopoulou, P.T. Tassios, D.V. Beste, S. Ioannidou, A. Efstratiou, E.R. Lawrence, J. Papaparaskevas, R.C. George, N.J. Legakis. A common clone of erythromycin-resistant Streptococcus pneumoniae in Greece and the UK. Clinical Microbiology and Infection 2003, 9: 924-929.
37. Ioannidou S, Papaparaskevas J, Tassios PT, Foustoukou M, Legakis NJ, Vatopoulos AC. Prevalence and characterization of the mechanisms of macrolide, lincosamide and streptogramin resistance in viridans group streptococci. Int J Antimicrob Agents. 2003 22: 626-629.
38. Onteniente L, Brisse S, Tassios PT, Vergnaud G. Evaluation of the polymorphisms associated with tandem repeats for Pseudomonas aeruginosa strain typing. J Clin Microbiol. 2003, 41: 4991-7.
39. M. H. Josefsen, N. Cook, M. D'Agostino, F. Hansen, M. Wagner, K. Demnerova, A. E. Heuvelink, P. T. Tassios, H. Lindmark, V. Kmet, M. Barbanera, P. Fach, S. Loncarevic, and J. Hoorfar. Validation of a PCR-Based Method for Detection of Food-Borne Thermotolerant Campylobacters in a Multicenter Collaborative Trial. Appl. Environ. Microbiol. 2004. 70: 4379-4383.
40. Kalocheretis P, Baimakou E, Zerbala S, Papaparaskevas J, Makriniotou I, Tassios PT, Iatrou C, Kouskouni E, Zerva L. Dissemination of vancomycin-resistant enterococci among haemodialysis patients in Athens, Greece. J Antimicrob Chemother. 2004, 54:1031-1034.
41. Morten Helms, Steen Ethelberg, Kåre Mølbak, and the DT104 study group (Diane Lightfoot and J. Powling, Australia; Christian Berghold and Christian Kornshober, Austria; Ingrid Wybo, J.M. Collard, and C. Godard, Belgium; Dalia dos Prazeres Rodrigues, Eliane Moura Falavina dos Reis, and Erica L. Fonseca, Brazil; Kathryn Doré, James Flint, Frank Pollari, Rafiq Ahmed, and Walter Demczuk, Canada; James Hospedales, Denise Clarke, and Michelle Nurse-Lucas, Caribbean Region; Renata Karpiskova, The Czech Republic; Peter Gerner-Smidt, Denmark; Noël Gill, Sarah O'Brien, and John Threlfall, England and Wales; Anja Siitonen and Susanna Lukinmaa, Finland; Wolfgang Rabsch, Germany; Panayotis T. Tassios, Leonidas S. Tzouvelekis, and Takis Panagiotopoulos, Greece; Judit Pàszti and Noelni Nógrády, Hungary; Barbara Foley, Martin Cormican, and Paul McKeown, Ireland; Nahum Andorn and Ruti Yishai, Israel; Haruo Watanabe and Hidemasa Izumiya, Japan; Bok Kwon Lee and Shukho Kim, Republic of Korea; J. Selga and J. Jansone, Latvia; Joel Mossong and François Schneider, Luxembourg; Julie Haider and Paul Cuschieri, Malta; Wilfrid van Pelt, Netherlands; Helen Heffernan and Carolyn Nicol, New Zealand; Karin Nygård and Trine Lise Stavnes, Norway; B.L. Cherkasskiy, Russian Federation; Lynda Browning and John Coia, Scotland; Karen Helena Keddy and Tersia Kruger, Republic of South Africa; Miquel Anger Usera, Spain; Agneta Olsson, Sweden; Patrick Boerlin, Switzerland; Timothy Barrett, Frederick J. Angulo, and Jennifer E. Stevenson, USA). International Salmonella Typhimurium DT104 Infections, 1992–2001. Emerg Infect Dis. 2005, 11:859-67.
42. L. Politi, P. T. Tassios, M. Lambiri, A. Kansouzidou, M. Pasiotou, A. C. Vatopoulos, K. Mellou, N. J. Legakis, and L. S. Tzouvelekis. Repeated Occurrence of Diverse Extended-Spectrum ß-Lactamases in Minor Serotypes of Food-Borne Salmonella enterica subsp. enterica. J Clin. Microbiol. 2005, 43: 3453-3456.
43. Pournaras S, Maniati M, Spanakis N, Ikonomidis A, Tassios PT, Tsakris A, Legakis NJ, Maniatis AN. Spread of efflux pump-overexpressing, non-metallo-β-lactamase-producing, meropenem-resistant but ceftazidime-susceptible Pseudomonas aeruginosa in a region with blaVIM endemicity. J Antimicrob Chemother. 2005, 56: 761-4.
44. Loli A, Tzouvelekis LS, Tzelepi E, Carattoli A, Vatopoulos AC, Tassios PT, Miriagou V. Sources of diversity of carbapenem resistance levels in Klebsiella pneumoniae carrying blaVIM-1. J Antimicrob Chemother 2006, 58: 669-72.
45. Daikos GL, Kosmidis C, Tassios PT, Petrikkos G, Vasilakopoulou A, Psychogiou M, Stefanou I, Avlami A, Katsilambros N. Enterobacteriaceae bloodstream infections: presence of integrons, risk factors, and outcome. Antimicrob Agents Chemother 2007, 51: 2366-72.
46. Mavroidi A, Paraskakis I, Pangalis A, Kirikou E, Charisiadou A, Athanasiou T, Tassios PT, Tzouvelekis LS. Spread of the Streptococcus pneumoniae Taiwan(19F)-14 clone among children in Greece. Clin Microbiol Infect 2007, 13:1213-6.
47. Cookson BD, Robinson DA, Monk AB, Murchan S, Deplano A, de Ryck R, Struelens MJ, Scheel C, Fussing V, Salmenlinna S, Vuopio-Varkila J, Cuny C, Witte W, Tassios PT, Legakis NJ, van Leeuwen W, van Belkum A, Vindel A, Garaizar J, Haeggman S, Olsson-Liljequist B, Ransjo U, Muller-Premru M, Hryniewicz W, Rossney A, O'Connell B, Short BD, Thomas J, O'Hanlon S, Enright MC. Evaluation of molecular typing methods in characterizing a European collection of epidemic methicillin-resistant Staphylococcus aureus strains: the HARMONY collection. J Clin Microbiol 2007, 45: 1830-7.
48. Maquelin K, Cookson B, Tassios P, van Belkum A; for the European Society for Microbiology and Infectious Diseases (ESCMID) Study Group on Epidemiological Markers (ESGEM). Current trends in the epidemiological typing of clinically relevant microbes in Europe. J Microbiol Methods 2007, 69: 222-6.
49. Psichogiou M, Tassios PT, Avlamis A, Stefanou I, Kosmidis C, Platsouka E, Paniara O, Xanthaki A, Toutouza M, Daikos GL, Tzouvelekis LS. Ongoing epidemic of blaVIM-1-positive Klebsiella pneumoniae in Athens, Greece: a prospective survey. J Antimicrob Chemother 2008, 6: 59-63.
50. Α. Stathi, J. Papaparaskevas, L. Zachariadou, A. Pangalis, N. J. Legakis, A. Tseleni-Kotsovili, P. T. Tassios. Prevalence of emm types 1 and 12 from invasive Streptococcus pyogenes disease in Greece – results of enhanced surveillance. Clinical Microbiology and Infection 2008, 14: 808 – 812
51. Luca-Harari B, Darenberg J, Neal S, Siljander T, Strakova L, Tanna A, Creti R, Ekelund K, Koliou M, Tassios PT, van der Linden M, Straut M, Vuopio-Varkila J, Bouvet A, Efstratiou A, Schalén C, Henriques-Normark B; the Strep-EURO study group, Jasir A. Clinical and Microbiological Characteristics of Severe Streptococcus pyogenes Disease in Europe. J Clin Microbiol 2009, 47: 1155-1165
52. Daikos GL, Petrikkos P, Psichogiou M, Kosmidis C, Vryonis E, Skoutelis A, Georgousi K, Tzouvelekis LS, Tassios PT, Bamia C, Petrikkos G. Prospective observational study of the impact of VIM-1 metallo-beta-lactamase on the outcome of patients with Klebsiella pneumoniae bloodstream infections. Antimicrob Agents Chemother 2009, 53: 1868-73.
2. Tassios PT, Gennimata V, Spaliara-Kalogeropoulou L, Kairis D, Koutsia C, Vatopoulos AC, Legakis NJ. Multi-resistant Pseudomonas aeruginosa O:11 outbreak in an intensive care unit. Clinical Microbiology and Infection 1997; 3: 621-628.
3. Tassios PT, Vatopoulos AC, Mainas E, Gennimata D, Papadakis J, Tsiftsoglou A, Kalapothaki V, Legakis NJ. Molecular analysis of ampicillin-resistant sporadic Salmonella typhi and Salmonella paratyphi B clinical isolates. Clin Microbiol Infect 1997, 3: 317-323.
4. Tassios PT, Markogiannakis A, Vatopoulos AC, Velonakis EN, Katsanikou K, Papadakis JA, Kourea-Kremastinou J, Legakis NJ. Molecular epidemiology of antibiotic resistance of Salmonella enteritidis during a 7-year period in Greece. J Clin Microbiol 1997; 35: 1316-1321.
5. Tassios PT, Vatopoulos AC, Xanthaki A, Mainas E, Goering RV, Legakis NJ. Distinct genotypic clusters of heterogeneously and homogeneously methicillin-resistant Staphylococcus aureus from a Greek hospital. Eur J Clin Microbiol Infect Dis 1997, 16: 170-173.
6. Kyriakopoulos AM, Tassios PT, Matsiota-Bernard P, Marinis E, Tsaousidou S, Legakis NJ. Characterization to species level of Mycobacterium avium complex strains from human immunodeficiendy virus-positive and –negative patients. J Clin Microbiol 1997, 35: 3001-3003.
7. Matsiota-Bernard P, Waser P, Tassios PT, Kyriakopoulos AM, Legakis NJ. Rapid discrimination of Mycobacterium avium strains from AIDS patients by randomly amplified polymorphic DNA analysis. J Clin Microbiol 1997; 35: 1585-1588.
8. van Belkum A, van Leeuwen W, Kaufmann ME, Cookson B, Forey F, Etienne J, Goering R, Tenover F, Steward C, O’Brien F, Grubb W, Tassios P, Legakis N, Morvan A, El Solh N, de Ryck R, Struelens M, Salmenlinna S, Vuopio-Varkila J, Koositra M, Talens A, Witte W, Verbrugh H. Assessment of resolution and intercenter reproducibility of results of genotyping Staphylococcus aureus by pulsed-field gel electrophoresis of SmaI macrorestriction fragments: a multicenter study. J Clin Microbiol 1998, 36: 1653-1659.
9. Tassios PT, Gennimata V, Maniatis AN, Fock C, Legakis NJ, and the Greek Pseudomonas aeruginosa Study Group. Emergence of multidrug resistance in ubiquitous and dominant Pseudomonas aeruginosa serogroup O:11. J Clin Microbiol 1998, 36: 897-901.
10. Fotopoulou Ν, Tsiplakou S, Maniatis AN, Pangali A, Kouppari G, Legakis NJ, Tassios PT. Gradual increase in the minimum inhibitory concentration of penicillin among both susceptible and resistant Streptococcus pneumoniae isolates from Greek children during 1995-1997. Ιnt J Antimicrob Agents 1999; 11: 53-57.
11. Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Legakis NJ, Vatopoulos AC. Reduced susceptibility to vancomycin of nosocomial methicillin-resistant Staphylococcus aureus isolates. J Antimicrob Chemother 1999; 43: 729-731.
12. Kantzanou M, Tassios PT, Tseleni-Kotsovili A, Maniatis AN, Vatopoulos AC, Legakis NJ, and the Greek MRSA Study Group. A multi-center study of nosocomial methicillin-resistant Staphylococcus aureus in Greece. Ιnt J Antimicrob Agents 1999; 12: 115-119.
13. Hadjichristodoulou C, Nikolakopoulou E, Karabibis K, Karakou E, Markogiannakis A, Panoulis C, Lampiri M, Tassios P. Outbreak of Salmonella gastroenteritis among attendees of a restaurant opening ceremony in Greece, in June 1998. Eurosurveillance 1999; 4: 72-75.
14. Vassilogiannakopoulos A, Tassios P, Lampiri M. Salmonella blockley infection in Greece. Eurosurveillance Weekly 1999, 15: 990418. (http://www.eurosurveillance.org/ViewArticle.aspx?ArticleId=1425)
15. Tassios PT, Gazouli M, Tzelepi E, Milch H, Kozlova NS, Sidorenko SV, Legakis NJ, Tzouvelekis LS. Spread of a Salmonella typhimurium clone resistant to third generation cephalosporins in three European countries. J Clin Microbiol 1999, 37: 3774-7.
16. Giakkoupi P, Tzelepi E, Tassios PT, Legakis NJ, Tzouvelekis LS.Detrimental effect of the combination of R164S with G238S in TEM-1 β-lactamase on the extended-spectrum activity conferred by each single mutation. J Antimicrob Chemother 2000, 45: 101-104.
17. Kyriazi Z, Chatzipanagiotou S, Trikka-Graphakos E, Legakis NJ, Tassios PT. Serotyping, biotyping and genomic DNA XbaI restriction fragment analysis of Yersinia enterocolitica isolated from infected β-thalassaemic and non-thalassaemic children in Greece. Clin Microbiol Infect 2000, 6: 157-158.
18. Tassios PT, Chadjichristodoulou C, Lambiri M, Kansouzidou-Kanakoudi A, Sarandopoulou Z, Kourea-Kremastinou J, Tzouvelekis LS, Legakis NJ. Molecular typing of multi-drug resistant Salmonella blockley outbreak isolates from Greece. Emerg Infect Dis 1999, 6: 60-64.
19. Markogiannakis A, Tassios PT, Lambiri M, Ward LR, Kourea-Kremastinou J, Legakis NJ, Vatopoulos AC, and the Greek Non-Typhoidal Salmonella Study Group. Multiple Clones within Multidrug-Resistant Salmonella enterica Serotype Typhimurium Phage Type DT104. J Clin Microbiol. 2000, 38:1269-1271.
20. Papaparaskevas J, Vatopoulos A, Tassios PT, Avlami A, Legakis NJ, Kalapothaki V. Diversity among high-level aminoglycoside resistant enterococci. J Antimicrob Chemother 2000, 45:277-283.
21. Mavroidi A, Tzouvelekis LS, Tassios PT, Flemetakis A, Daniilidou M, Tzelepi E. Characterization of Neisseria gonorrhoeae strains with decreased susceptibility to fluroquinolones isolated in Greece from 1996 to 1999. J Clin Microbiol 2000, 38: 3489-3491.
22. Deplano A, Schuermans A, Van Eldere J, Witte W, Meugnier H, Etienne J, Grundmann H, Jonas D, Noordhoek GT, Dijkstra J, van Belkum A, van Leeuwen W, Tassios PT, Legakis NJ, van der Zee A, Bergmans A, Blanc DS, Tenover FC, Cookson BC, O'Neil G, Struelens MJ, and The European Study Group on Epidemiological Markers of the ESCMID. Multicenter evaluation of epidemiological typing of methicillin-resistant Staphylococcus aureus by repetitive-element PCR analysis. J Clin Microbiol 2000, 38: 3527-3533.
23. Deplano A, Tassios PT, Glupczynski Y, Godfroid E, Struelens MJ. In vivo deletion of the methicillin resistance mec region from the chromosome of Staphylococcus aureus strains. J Antimicrob Chemother 2000, 46:617-620.
24. Kyriakopoulos AM, Matsiota-Bernard P, Marinis E, Legakis NJ, Tassios PT. Comparison of Mycobacterium avium isolates from Greek AIDS and human immunodeficiency virus-negative patients by pulsed-field gel electrophoresis. Clin Microbiol Infect 2000, 6: 490-495.
25. Chung M, de Lencastre H, Matthews P, Tomasz A, and the Multilaboratory Project Collaborators – Adamsson I, Aires de Sousa M, Camou T, Cocuzza C, Corso A, Couto I, Dominguez A, Gniadkowski M, Goering R, Gomes A, Kikuchi K, Marchese A, Mato R, Melter O, Oliveira D, Palacio R, Sa-Leao R, Santos Sanches I, Song J-H, Tassios PT, Villari P. Molecular typing of methicillin-resistant Staphylococcus aureus by pulsed-field gel electrophoresis: comparison of results obtained in a multilaboratory effort using identical protocols and MRSA strains. Microb Drug Res 2000, 6: 189-198.
26. Ioannidou S, Tassios PT, Kotsovili-Tseleni A, Foustoukou M, Legakis NJ, Vatopoulos A. Antibiotic resistance rates and macrolide resistance phenotypes of viridans group streptococci from the oropharynx of healthy Greek children. Int J Antimicrob Agents 2001, 17: 195-201.
27. E. Lebessi, H. Dellagrammaticas, P.T. Tassios, L. S. Tzouvelekis, S. Ioannidou, M. Foustoukou, and N. J. Legakis. Extended-Spectrum ß-Lactamase-Producing Klebsiella pneumoniae in a Neonatal Intensive Care Unit in the High-Prevalence Area of Athens, Greece. J. Clin. Microbiol. 2002 40: 799-804.
28. Villa L, Mammina C, Miriagou V, Tzouvelekis LS, Tassios PT, Nastasi A, Carattoli A. Multidrug and Broad-Spectrum Cephalosporin Resistance among Salmonella enterica Serotype Enteritidis Clinical Isolates in Southern Italy. J Clin Microbiol 2002, 40:2662-2665.
29. Joseph Papaparaskevas, Panayotis T. Tassios, Victoria Kalapothaki, Athina Avlami, Nicholas J. Legakis and Alkiviadis C. Vatopoulos. Epidemiology of multiresistant Enterococcus avium isolates in a Greek tertiary care hospital. International Journal of Antimicrobial Agents 2002, 20: 432-437.
30. Tzouvelekis LS, Lukova V, Tassios PT, Fluit AC, Jones RN, Legakis NJ. Resistance to beta-lactams among blood isolates of Salmonella spp. in European hospitals: results from the SENTRY Αntimicrobial Surveillance Program 1997-98. Clin Microbiol Infect 2003, 9:149-152.
31. L. Zachariadou, J. Papaparaskevas, I. Paraskakis, A. Efstratiou, A. Pangalis, N. J. Legakis, P. T. Tassios. Predominance of two M-types among erythromycin-resistant group A Streptococci from Greek children. Clin Microbiol Infect 2003, 9: 310-314.
32. Stephen Murchan, Mary Elizabeth Kaufmann, Ariane Deplano, Raf de Ryck, Marc Struelens, Christina Elsberg Zinn, Vivian Fussing, Saara Salmenlinna, Jaana Vuopio-Varkila, Névine El Solh, Christina Cuny, Wolfgang Witte, Panayotis T. Tassios, Nikolas Legakis, Willem van Leeuwen, Alex van Belkum, Anna Vindel, Idoia Laconcha, Javier Garaizar, Saara Haeggman, Barbro Olsson-Liljequist, Ulrika Ransjo, Geoffrey Coombes, and Barry Cookson. Harmonization of Pulsed-Field Gel Electrophoresis Protocols for Epidemiological Typing of Strains of Methicillin-Resistant Staphylococcus aureus: a Single Approach Developed by Consensus in 10 European Laboratories and Its Application for Tracing the Spread of Related Strains J. Clin. Microbiol. 2003, 41: 1574-1585.
33. A.N. Maniatis, S. Pournaras, S. Orkopoulou, P.T. Tassios, N.J. Legakis and the Bacterial Resistance Study Group. Multiresistant Acinetobacter baumannii isolates in intensive care units in Greece. Clinical Microbiology & Infection 2003, 9: 547-553.
34. 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. In vitro activity of telithromycin (HMR 3647) against Greek Streptococcus pyogenes and Streptococcus pneumoniae clinical isolates with different macrolide susceptibilitie. Clinical Microbiology & Infection 2003, 9: 704-707.
35. Α. Tsakris, P.T. Tassios, F. Polydorou, A. Papa, E. Malaka, A. Antoniadis, N.J. Legakis. Infrequent detection of acquired metallo-β-lactamases among carbapenem-resistant Pseudomonas isolates in a Greek hospital. Clinical Microbiology and Infection 2003, 9: 846-851.
36. N. Fotopoulou, P.T. Tassios, D.V. Beste, S. Ioannidou, A. Efstratiou, E.R. Lawrence, J. Papaparaskevas, R.C. George, N.J. Legakis. A common clone of erythromycin-resistant Streptococcus pneumoniae in Greece and the UK. Clinical Microbiology and Infection 2003, 9: 924-929.
37. Ioannidou S, Papaparaskevas J, Tassios PT, Foustoukou M, Legakis NJ, Vatopoulos AC. Prevalence and characterization of the mechanisms of macrolide, lincosamide and streptogramin resistance in viridans group streptococci. Int J Antimicrob Agents. 2003 22: 626-629.
38. Onteniente L, Brisse S, Tassios PT, Vergnaud G. Evaluation of the polymorphisms associated with tandem repeats for Pseudomonas aeruginosa strain typing. J Clin Microbiol. 2003, 41: 4991-7.
39. M. H. Josefsen, N. Cook, M. D'Agostino, F. Hansen, M. Wagner, K. Demnerova, A. E. Heuvelink, P. T. Tassios, H. Lindmark, V. Kmet, M. Barbanera, P. Fach, S. Loncarevic, and J. Hoorfar. Validation of a PCR-Based Method for Detection of Food-Borne Thermotolerant Campylobacters in a Multicenter Collaborative Trial. Appl. Environ. Microbiol. 2004. 70: 4379-4383.
40. Kalocheretis P, Baimakou E, Zerbala S, Papaparaskevas J, Makriniotou I, Tassios PT, Iatrou C, Kouskouni E, Zerva L. Dissemination of vancomycin-resistant enterococci among haemodialysis patients in Athens, Greece. J Antimicrob Chemother. 2004, 54:1031-1034.
41. Morten Helms, Steen Ethelberg, Kåre Mølbak, and the DT104 study group (Diane Lightfoot and J. Powling, Australia; Christian Berghold and Christian Kornshober, Austria; Ingrid Wybo, J.M. Collard, and C. Godard, Belgium; Dalia dos Prazeres Rodrigues, Eliane Moura Falavina dos Reis, and Erica L. Fonseca, Brazil; Kathryn Doré, James Flint, Frank Pollari, Rafiq Ahmed, and Walter Demczuk, Canada; James Hospedales, Denise Clarke, and Michelle Nurse-Lucas, Caribbean Region; Renata Karpiskova, The Czech Republic; Peter Gerner-Smidt, Denmark; Noël Gill, Sarah O'Brien, and John Threlfall, England and Wales; Anja Siitonen and Susanna Lukinmaa, Finland; Wolfgang Rabsch, Germany; Panayotis T. Tassios, Leonidas S. Tzouvelekis, and Takis Panagiotopoulos, Greece; Judit Pàszti and Noelni Nógrády, Hungary; Barbara Foley, Martin Cormican, and Paul McKeown, Ireland; Nahum Andorn and Ruti Yishai, Israel; Haruo Watanabe and Hidemasa Izumiya, Japan; Bok Kwon Lee and Shukho Kim, Republic of Korea; J. Selga and J. Jansone, Latvia; Joel Mossong and François Schneider, Luxembourg; Julie Haider and Paul Cuschieri, Malta; Wilfrid van Pelt, Netherlands; Helen Heffernan and Carolyn Nicol, New Zealand; Karin Nygård and Trine Lise Stavnes, Norway; B.L. Cherkasskiy, Russian Federation; Lynda Browning and John Coia, Scotland; Karen Helena Keddy and Tersia Kruger, Republic of South Africa; Miquel Anger Usera, Spain; Agneta Olsson, Sweden; Patrick Boerlin, Switzerland; Timothy Barrett, Frederick J. Angulo, and Jennifer E. Stevenson, USA). International Salmonella Typhimurium DT104 Infections, 1992–2001. Emerg Infect Dis. 2005, 11:859-67.
42. L. Politi, P. T. Tassios, M. Lambiri, A. Kansouzidou, M. Pasiotou, A. C. Vatopoulos, K. Mellou, N. J. Legakis, and L. S. Tzouvelekis. Repeated Occurrence of Diverse Extended-Spectrum ß-Lactamases in Minor Serotypes of Food-Borne Salmonella enterica subsp. enterica. J Clin. Microbiol. 2005, 43: 3453-3456.
43. Pournaras S, Maniati M, Spanakis N, Ikonomidis A, Tassios PT, Tsakris A, Legakis NJ, Maniatis AN. Spread of efflux pump-overexpressing, non-metallo-β-lactamase-producing, meropenem-resistant but ceftazidime-susceptible Pseudomonas aeruginosa in a region with blaVIM endemicity. J Antimicrob Chemother. 2005, 56: 761-4.
44. Loli A, Tzouvelekis LS, Tzelepi E, Carattoli A, Vatopoulos AC, Tassios PT, Miriagou V. Sources of diversity of carbapenem resistance levels in Klebsiella pneumoniae carrying blaVIM-1. J Antimicrob Chemother 2006, 58: 669-72.
45. Daikos GL, Kosmidis C, Tassios PT, Petrikkos G, Vasilakopoulou A, Psychogiou M, Stefanou I, Avlami A, Katsilambros N. Enterobacteriaceae bloodstream infections: presence of integrons, risk factors, and outcome. Antimicrob Agents Chemother 2007, 51: 2366-72.
46. Mavroidi A, Paraskakis I, Pangalis A, Kirikou E, Charisiadou A, Athanasiou T, Tassios PT, Tzouvelekis LS. Spread of the Streptococcus pneumoniae Taiwan(19F)-14 clone among children in Greece. Clin Microbiol Infect 2007, 13:1213-6.
47. Cookson BD, Robinson DA, Monk AB, Murchan S, Deplano A, de Ryck R, Struelens MJ, Scheel C, Fussing V, Salmenlinna S, Vuopio-Varkila J, Cuny C, Witte W, Tassios PT, Legakis NJ, van Leeuwen W, van Belkum A, Vindel A, Garaizar J, Haeggman S, Olsson-Liljequist B, Ransjo U, Muller-Premru M, Hryniewicz W, Rossney A, O'Connell B, Short BD, Thomas J, O'Hanlon S, Enright MC. Evaluation of molecular typing methods in characterizing a European collection of epidemic methicillin-resistant Staphylococcus aureus strains: the HARMONY collection. J Clin Microbiol 2007, 45: 1830-7.
48. Maquelin K, Cookson B, Tassios P, van Belkum A; for the European Society for Microbiology and Infectious Diseases (ESCMID) Study Group on Epidemiological Markers (ESGEM). Current trends in the epidemiological typing of clinically relevant microbes in Europe. J Microbiol Methods 2007, 69: 222-6.
49. Psichogiou M, Tassios PT, Avlamis A, Stefanou I, Kosmidis C, Platsouka E, Paniara O, Xanthaki A, Toutouza M, Daikos GL, Tzouvelekis LS. Ongoing epidemic of blaVIM-1-positive Klebsiella pneumoniae in Athens, Greece: a prospective survey. J Antimicrob Chemother 2008, 6: 59-63.
50. Α. Stathi, J. Papaparaskevas, L. Zachariadou, A. Pangalis, N. J. Legakis, A. Tseleni-Kotsovili, P. T. Tassios. Prevalence of emm types 1 and 12 from invasive Streptococcus pyogenes disease in Greece – results of enhanced surveillance. Clinical Microbiology and Infection 2008, 14: 808 – 812
51. Luca-Harari B, Darenberg J, Neal S, Siljander T, Strakova L, Tanna A, Creti R, Ekelund K, Koliou M, Tassios PT, van der Linden M, Straut M, Vuopio-Varkila J, Bouvet A, Efstratiou A, Schalén C, Henriques-Normark B; the Strep-EURO study group, Jasir A. Clinical and Microbiological Characteristics of Severe Streptococcus pyogenes Disease in Europe. J Clin Microbiol 2009, 47: 1155-1165
52. Daikos GL, Petrikkos P, Psichogiou M, Kosmidis C, Vryonis E, Skoutelis A, Georgousi K, Tzouvelekis LS, Tassios PT, Bamia C, Petrikkos G. Prospective observational study of the impact of VIM-1 metallo-beta-lactamase on the outcome of patients with Klebsiella pneumoniae bloodstream infections. Antimicrob Agents Chemother 2009, 53: 1868-73.
53. Vasilakopoulou A, Psichogiou M, Tzouvelekis L, Tassios PT, Kosmidis C, Petrikkos G, Roma ES, Charvalos E, Passiotou M, Avlami A, Daikos GL. Prevalence and Characterization of Class 1 Integrons in Escherichia coli of Poultry and Human Origin. Foodborne Pathog Dis. 2009, 10: 1211-8.
54. Daikos GL, Vryonis E, Psichogiou M, Tzouvelekis LS, Liatis S, Petrikkos P, Kosmidis C, Tassios PT, Bamias G, Skoutelis A. Risk factors for bloodstream infection with Klebsiella pneumoniae producing VIM-1 metallo-beta-lactamase. J Antimicrob Chemother. 2010, 65: 784-8.
55. Chatzigeorgiou KS, Ikonomopoulou C, Kalogeropoulou S, Siafakas N, Giannopoulos G, Antoniadou A, Tassios PT, Tarpatzi E, Giannitsioti E, Vlachakos D, Ikonomopoulos T, Petinaki E, Zerva L. Two successfully treated cases of Staphylococcus lugdunensis endocarditis. Diagn Microbiol Infect Dis. 2010, 68:445-8.
56. D'Andrea MM, Literacka E, Zioga A, Giani T, Baraniak A, Fiett J, Sadowy E, Tassios PT, Rossolini GM, Gniadkowski M, Miriagou V. Evolution of a multi-drug-resistant Proteus mirabilis clone with chromosomal AmpC-type cephalosporinases spreading in Europe. Antimicrob Agents Chemother. 2011, 55: 2735-42.
57. Zachariadou L, Stathi A, Tassios PT, Pangalis A, Legakis NJ; the Hellenic Strep-Euro Study Group, Papaparaskevas J. Differences in the epidemiology between paediatric and adult invasive Streptococcus pyogenes infections. Epidemiol Infect. 2014, 142:512-9.
58. Spina A, Kerr KG, Cormican M, Barbut F, Eigentler A, Zerva L, Tassios P, Popescu GA, Rafila A, Eerola E, Batista J, Maass M, Aschbacher R, Olsen KE, Allerberger F. Spectrum of enteropathogens detected by FilmArray® GI Panel in a multi-centre study of community-acquired gastroenteritis. Clin Microbiol Infect 2015, 8: 719-28.
57. Zachariadou L, Stathi A, Tassios PT, Pangalis A, Legakis NJ; the Hellenic Strep-Euro Study Group, Papaparaskevas J. Differences in the epidemiology between paediatric and adult invasive Streptococcus pyogenes infections. Epidemiol Infect. 2014, 142:512-9.
58. Spina A, Kerr KG, Cormican M, Barbut F, Eigentler A, Zerva L, Tassios P, Popescu GA, Rafila A, Eerola E, Batista J, Maass M, Aschbacher R, Olsen KE, Allerberger F. Spectrum of enteropathogens detected by FilmArray® GI Panel in a multi-centre study of community-acquired gastroenteritis. Clin Microbiol Infect 2015, 8: 719-28.
