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Items: 1 to 50 of 104

1.

Origin and evolution of European community-acquired methicillin-resistant Staphylococcus aureus.

Stegger M, Wirth T, Andersen PS, Skov RL, De Grassi A, Simões PM, Tristan A, Petersen A, Aziz M, Kiil K, Cirković I, Udo EE, del Campo R, Vuopio-Varkila J, Ahmad N, Tokajian S, Peters G, Schaumburg F, Olsson-Liljequist B, Givskov M, Driebe EE, Vigh HE, Shittu A, Ramdani-Bougessa N, Rasigade JP, Price LB, Vandenesch F, Larsen AR, Laurent F.

MBio. 2014 Aug 26;5(5):e01044-14. doi: 10.1128/mBio.01044-14.

2.

Livestock-associated methicillin-resistant Staphylococcus aureus in humans, Europe.

van Cleef BA, Monnet DL, Voss A, Krziwanek K, Allerberger F, Struelens M, Zemlickova H, Skov RL, Vuopio-Varkila J, Cuny C, Friedrich AW, Spiliopoulou I, Pászti J, Hardardottir H, Rossney A, Pan A, Pantosti A, Borg M, Grundmann H, Mueller-Premru M, Olsson-Liljequist B, Widmer A, Harbarth S, Schweiger A, Unal S, Kluytmans JA.

Emerg Infect Dis. 2011 Mar;17(3):502-5. doi: 10.3201/eid1703.101036.

3.

Emergence of extended-spectrum beta-lactamase-producing Escherichia coli and Klebsiella pneumoniae during the years 2000 and 2004 in Helsinki, Finland.

Forssten SD, Kolho E, Lauhio A, Lehtola L, Mero S, Oksaharju A, Jalava J, Tarkka E, Vaara M, Vuopio-Varkila J.

Clin Microbiol Infect. 2010 Aug;16(8):1158-61. doi: 10.1111/j.1469-0691.2010.03068.x.

4.

Streptococcus dysgalactiae subsp. equisimilis Bacteremia, Finland, 1995-2004.

Rantala S, Vahakuopus S, Vuopio-Varkila J, Vuento R, Syrjanen J.

Emerg Infect Dis. 2010 May;16(5):843-6. doi: 10.3201/eid1605.080803.

5.

A selective broth enrichment combined with real-time nuc-mecA-PCR in the exclusion of MRSA.

Pasanen T, Korkeila M, Mero S, Tarkka E, Piiparinen H, Vuopio-Varkila J, Vaara M, Tissari P.

APMIS. 2010 Jan;118(1):74-80. doi: 10.1111/j.1600-0463.2009.02562.x.

PMID:
20041874
6.

Methicillin-resistant Staphylococcus aureus screening by online immunometric monitoring of bacterial growth under selective pressure.

Stenholm T, Hakanen AJ, Vaarno J, Pihlasalo S, Terho P, Hänninen PE, Vuopio-Varkila J, Huovinen P, Kotilainen P.

Antimicrob Agents Chemother. 2009 Dec;53(12):5088-94. doi: 10.1128/AAC.00518-09. Epub 2009 Sep 14.

7.

Predictors of death after severe Streptococcus pyogenes infection.

Lamagni TL, Neal S, Keshishian C, Powell D, Potz N, Pebody R, George R, Duckworth G, Vuopio-Varkila J, Efstratiou A.

Emerg Infect Dis. 2009 Aug;15(8):1304-7. doi: 10.3201/eid1508.090264.

8.

Factors predisposing to acute and recurrent bacterial non-necrotizing cellulitis in hospitalized patients: a prospective case-control study.

Karppelin M, Siljander T, Vuopio-Varkila J, Kere J, Huhtala H, Vuento R, Jussila T, Syrjänen J.

Clin Microbiol Infect. 2010 Jun;16(6):729-34. doi: 10.1111/j.1469-0691.2009.02906.x. Epub 2009 Aug 20.

9.

Evaluation of a commercial MRSA assay when multiple MRSA strains are causing epidemics.

Sissonen S, Pasanen T, Salmenlinna S, Vuopio-Varkila J, Tarkka E, Vaara M, Tissari P.

Eur J Clin Microbiol Infect Dis. 2009 Oct;28(10):1271-3. doi: 10.1007/s10096-009-0771-z. Epub 2009 Jul 25.

PMID:
19633873
10.

Community-associated methicillin-resistant Staphylococcus aureus isolated in Finland in 2004 to 2006.

Kanerva M, Salmenlinna S, Vuopio-Varkila J, Lehtinen P, Möttönen T, Virtanen MJ, Lyytikäinen O.

J Clin Microbiol. 2009 Aug;47(8):2655-7. doi: 10.1128/JCM.00771-09. Epub 2009 Jun 3.

11.

Predictors of mortality in beta-hemolytic streptococcal bacteremia: a population-based study.

Rantala S, Vuopio-Varkila J, Vuento R, Huhtala H, Syrjänen J.

J Infect. 2009 Apr;58(4):266-72. doi: 10.1016/j.jinf.2009.01.015. Epub 2009 Mar 3.

PMID:
19261333
12.

Clinical presentations and epidemiology of beta-haemolytic streptococcal bacteraemia: a population-based study.

Rantala S, Vuopio-Varkila J, Vuento R, Huhtala H, Syrjänen J.

Clin Microbiol Infect. 2009 Mar;15(3):286-8. doi: 10.1111/j.1469-0691.2008.02672.x. Epub 2009 Jan 27.

13.

Clinical and microbiological characteristics of severe Streptococcus pyogenes disease in Europe.

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; Strep-EURO Study Group, Jasir A.

J Clin Microbiol. 2009 Apr;47(4):1155-65. doi: 10.1128/JCM.02155-08. Epub 2009 Jan 21.

14.

Rapid emergence of emm84 among invasive Streptococcus pyogenes infections in Finland.

Siljander T, Lyytikäinen O, Vähäkuopus S, Säilä P, Jalava J, Vuopio-Varkila J.

J Clin Microbiol. 2009 Feb;47(2):477-80. doi: 10.1128/JCM.01663-08. Epub 2008 Dec 10.

15.

Molecular characterization of methicillin-resistant Staphylococcus epidermidis strains from bacteraemic patients.

Ibrahem S, Salmenlinna S, Lyytikäinen O, Vaara M, Vuopio-Varkila J.

Clin Microbiol Infect. 2008 Nov;14(11):1020-7. doi: 10.1111/j.1469-0691.2008.02080.x.

16.

Epidemic of severe Streptococcus pyogenes infections in injecting drug users in the UK, 2003-2004.

Lamagni TL, Neal S, Keshishian C, Hope V, George R, Duckworth G, Vuopio-Varkila J, Efstratiou A.

Clin Microbiol Infect. 2008 Nov;14(11):1002-9. doi: 10.1111/j.1469-0691.2008.02076.x.

17.

Emergence and spread of vancomycin resistance among enterococci in Europe.

Werner G, Coque TM, Hammerum AM, Hope R, Hryniewicz W, Johnson A, Klare I, Kristinsson KG, Leclercq R, Lester CH, Lillie M, Novais C, Olsson-Liljequist B, Peixe LV, Sadowy E, Simonsen GS, Top J, Vuopio-Varkila J, Willems RJ, Witte W, Woodford N.

Euro Surveill. 2008 Nov 20;13(47). pii: 19046. Review.

18.

Evaluation of phenotypic and molecular methods for screening and detection of methicillin-resistant Staphylococcus aureus.

Kerttula AM, Mero S, Pasanen T, Vuopio-Varkila J, Virolainen A.

Scand J Infect Dis. 2008;40(8):663-6.

PMID:
18979605
19.

Carriage of methicillin-resistant Staphylococci and their SCCmec types in a long-term-care facility.

Ibrahem S, Salmenlinna S, Virolainen A, Kerttula AM, Lyytikäinen O, Jägerroos H, Broas M, Vuopio-Varkila J.

J Clin Microbiol. 2009 Jan;47(1):32-7. doi: 10.1128/JCM.01085-08. Epub 2008 Oct 29.

20.

Complement factor H allotype 402H is associated with increased C3b opsonization and phagocytosis of Streptococcus pyogenes.

Haapasalo K, Jarva H, Siljander T, Tewodros W, Vuopio-Varkila J, Jokiranta TS.

Mol Microbiol. 2008 Nov;70(3):583-94. doi: 10.1111/j.1365-2958.2008.06347.x. Epub 2008 Jun 27. Erratum in: Mol Microbiol. 2012 Mar;83(6):1285-6.

21.

Proposal for common Nordic epidemiological terms and definitions for methicillin-resistant Staphylococcus aureus (MRSA).

Skov R, Gudlaugsson O, Hardardottir H, Harthug S, Jakobsen T, Kolmos HJ, Olsson-Liljequist B, Peltonen R, Tveten Y, Vuopio-Varkila J, Ahrén C.

Scand J Infect Dis. 2008;40(6-7):495-502. doi: 10.1080/00365540701864658.

PMID:
18584537
22.

Binding of complement regulators factor H and C4b binding protein to group A streptococcal strains isolated from tonsillar tissue and blood.

Suvilehto J, Jarva H, Seppänen M, Siljander T, Vuopio-Varkila J, Meri S.

Microbes Infect. 2008 Jun;10(7):757-63. doi: 10.1016/j.micinf.2008.04.004. Epub 2008 Apr 16.

PMID:
18538613
23.

Epidemiology of severe Streptococcus pyogenes disease in Europe.

Lamagni TL, Darenberg J, Luca-Harari B, Siljander T, Efstratiou A, Henriques-Normark B, Vuopio-Varkila J, Bouvet A, Creti R, Ekelund K, Koliou M, Reinert RR, Stathi A, Strakova L, Ungureanu V, Schalén C; Strep-EURO Study Group, Jasir A.

J Clin Microbiol. 2008 Jul;46(7):2359-67. doi: 10.1128/JCM.00422-08. Epub 2008 May 7.

24.

Methicillin-sensitive Staphylococcus aureus bacteraemia and endocarditis among injection drug users and nonaddicts: host factors, microbiological and serological characteristics.

Ruotsalainen E, Kardén-Lilja M, Kuusela P, Vuopio-Varkila J, Virolainen-Julkunen A, Sarna S, Valtonen V, Järvinen A.

J Infect. 2008 Apr;56(4):249-56. doi: 10.1016/j.jinf.2008.01.009. Epub 2008 Mar 7.

PMID:
18314197
25.

Clonality of epidemic methicillin-resistant Staphylococcus aureus strains in Finland as defined by several molecular methods.

Vainio A, Kardén-Lilja M, Ibrahem S, Kerttula AM, Salmenlinna S, Virolainen A, Vuopio-Varkila J.

Eur J Clin Microbiol Infect Dis. 2008 Jul;27(7):545-55. doi: 10.1007/s10096-008-0470-1. Epub 2008 Feb 15.

PMID:
18274796
26.

Acute bacterial, nonnecrotizing cellulitis in Finland: microbiological findings.

Siljander T, Karppelin M, Vähäkuopus S, Syrjänen J, Toropainen M, Kere J, Vuento R, Jussila T, Vuopio-Varkila J.

Clin Infect Dis. 2008 Mar 15;46(6):855-61. doi: 10.1086/527388.

PMID:
18260753
27.

Severe Streptococcus pyogenes infections, United Kingdom, 2003-2004.

Lamagni TL, Neal S, Keshishian C, Alhaddad N, George R, Duckworth G, Vuopio-Varkila J, Efstratiou A.

Emerg Infect Dis. 2008 Feb;14(2):202-9. doi: 10.3201/eid1402.070888.

28.

Staphylococcus aureus colonization among nursing home residents in a large Finnish nursing home.

Kerttula AM, Lyytikäinen O, Virolainen A, Finne-Soveri H, Agthe N, Vuopio-Varkila J.

Scand J Infect Dis. 2007;39(11-12):996-1001. Epub 2007 Jun 21.

PMID:
17852935
29.

A cluster of Candida krusei infections in a haematological unit.

Hautala T, Ikäheimo I, Husu H, Säily M, Siitonen T, Koistinen P, Vuopio-Varkila J, Koskela M, Kujala P.

BMC Infect Dis. 2007 Aug 22;7:97.

30.

Nationwide trends in molecular epidemiology of methicillin-resistant Staphylococcus aureus, Finland, 1997-2004.

Kerttula AM, Lyytikäinen O, Kardén-Lilja M, Ibrahem S, Salmenlinna S, Virolainen A, Vuopio-Varkila J.

BMC Infect Dis. 2007 Aug 14;7:94.

31.

Panton-Valentine leukocidin genes and staphylococcal chromosomal cassette mec types amongst Finnish community-acquired methicillin-resistant Staphylococcus aureus strains, 1997-1999.

Kardén-Lilja M, Ibrahem S, Vuopio-Varkila J, Salmenlinna S, Lyytikäinen O, Siira L, Virolainen A.

Eur J Clin Microbiol Infect Dis. 2007 Oct;26(10):729-33.

PMID:
17647034
32.

Comparison of two bacteremic Asaia bogorensis isolates from Europe.

Tuuminen T, Roggenkamp A, Vuopio-Varkila J.

Eur J Clin Microbiol Infect Dis. 2007 Jul;26(7):523-4. No abstract available.

PMID:
17562089
33.

Evaluation of molecular typing methods in characterizing a European collection of epidemic methicillin-resistant Staphylococcus aureus strains: the HARMONY collection.

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.

J Clin Microbiol. 2007 Jun;45(6):1830-7. Epub 2007 Apr 11.

34.

emm typing of invasive T28 group A streptococci, 1995-2004, Finland.

Siljander T, Toropainen M, Muotiala A, Hoe NP, Musser JM, Vuopio-Varkila J.

J Med Microbiol. 2006 Dec;55(Pt 12):1701-6.

PMID:
17108274
35.

An outbreak of Streptococcus equi subspecies zooepidemicus associated with consumption of fresh goat cheese.

Kuusi M, Lahti E, Virolainen A, Hatakka M, Vuento R, Rantala L, Vuopio-Varkila J, Seuna E, Karppelin M, Hakkinen M, Takkinen J, Gindonis V, Siponen K, Huotari K.

BMC Infect Dis. 2006 Feb 27;6:36.

36.

Molecular epidemiology of an outbreak caused by methicillin-resistant Staphylococcus aureus in a health care ward and associated nursing home.

Kerttula AM, Lyytikäinen O, Vuopio-Varkila J, Ibrahem S, Agthe N, Broas M, Jägerroos H, Virolainen A.

J Clin Microbiol. 2005 Dec;43(12):6161-3.

37.

The epidemiology of severe Streptococcus pyogenes associated disease in Europe.

Lamagni TL, Efstratiou A, Vuopio-Varkila J, Jasir A, Schalén C; Strep-EURO.

Euro Surveill. 2005 Sep;10(9):179-84. Review.

PMID:
16280610
38.

Meticillin-resistant Staphylococcus aureus.

Boyce JM, Cookson B, Christiansen K, Hori S, Vuopio-Varkila J, Kocagöz S, Oztop AY, Vandenbroucke-Grauls CM, Harbarth S, Pittet D.

Lancet Infect Dis. 2005 Oct;5(10):653-63. Review. No abstract available.

PMID:
16183520
39.

The epidemiology of severe Streptococcus pyogenes associated disease in Europe.

Lamagni TL, Efstratiou A, Vuopio-Varkila J, Jasir A, Schalén C, Strep-Euro.

Euro Surveill. 2005 Sep;10(9):9-10. doi: 10.2807/esm.10.09.00563-en.

PMID:
29208094
40.

Evolutionary origin and emergence of a highly successful clone of serotype M1 group a Streptococcus involved multiple horizontal gene transfer events.

Sumby P, Porcella SF, Madrigal AG, Barbian KD, Virtaneva K, Ricklefs SM, Sturdevant DE, Graham MR, Vuopio-Varkila J, Hoe NP, Musser JM.

J Infect Dis. 2005 Sep 1;192(5):771-82. Epub 2005 Jul 29.

PMID:
16088826
41.

Genetic diversity among type emm28 group A Streptococcus strains causing invasive infections and pharyngitis.

Green NM, Beres SB, Graviss EA, Allison JE, McGeer AJ, Vuopio-Varkila J, LeFebvre RB, Musser JM.

J Clin Microbiol. 2005 Aug;43(8):4083-91.

42.

Comparison of genotypes of methicillin-resistant and methicillin-sensitive Staphylococcus aureus in Finland.

Ibrahem S, Salmenlinna S, Kerttula AM, Virolainen-Julkunen A, Kuusela P, Vuopio-Varkila J.

Eur J Clin Microbiol Infect Dis. 2005 May;24(5):325-8.

PMID:
15891917
43.

The pls gene found in methicillin-resistant Staphylococcus aureus strains is common in clinical isolates of Staphylococcus sciuri.

Juuti K, Ibrahem S, Virolainen-Julkunen A, Vuopio-Varkila J, Kuusela P.

J Clin Microbiol. 2005 Mar;43(3):1415-9. Erratum in: J Clin Microbiol. 2005 Jul;43(7):3589.

44.

Bacterial genotype affects the manifestation and persistence of bovine Staphylococcus aureus intramammary infection.

Haveri M, Taponen S, Vuopio-Varkila J, Salmenlinna S, Pyörälä S.

J Clin Microbiol. 2005 Feb;43(2):959-61.

45.

Control of methicillin-resistant Staphylococcus aureus outbreak involving several hospitals.

Pastila S, Sammalkorpi KT, Vuopio-Varkila J, Kontiainen S, Ristola MA.

J Hosp Infect. 2004 Nov;58(3):180-6.

PMID:
15501331
46.

Clustering of Serratia marcescens infections in a neonatal intensive care unit.

Sarvikivi E, Lyytikäinen O, Salmenlinna S, Vuopio-Varkila J, Luukkainen P, Tarkka E, Saxén H.

Infect Control Hosp Epidemiol. 2004 Sep;25(9):723-9.

PMID:
15484795
47.

Changing epidemiology of methicillin-resistant Staphylococcus aureus in Finland.

Kerttula AM, Lyytikäinen O, Salmenlinna S, Vuopio-Varkila J.

J Hosp Infect. 2004 Oct;58(2):109-14.

PMID:
15474181
48.

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.

Murchan S, Kaufmann ME, Deplano A, de Ryck R, Struelens M, Zinn CE, Fussing V, Salmenlinna S, Vuopio-Varkila J, El Solh N, Cuny C, Witte W, Tassios PT, Legakis N, van Leeuwen W, van Belkum A, Vindel A, Laconcha I, Garaizar J, Haeggman S, Olsson-Liljequist B, Ransjo U, Coombes G, Cookson B.

J Clin Microbiol. 2003 Apr;41(4):1574-85.

49.

Increase of the number of vancomycin resistant enterococci (VRE) isolated in Helsinki, Finland.

Vuopio-Varkila J, Suppola J, Klinger N, Tarkka E, Kolho E.

Euro Surveill. 1997 Dec;2(12):97-98.

PMID:
12631788
50.

Elimination of epidemic methicillin-resistant Staphylococcus aureus from a university hospital and district institutions, Finland.

Kotilainen P, Routamaa M, Peltonen R, Oksi J, Rintala E, Meurman O, Lehtonen OP, Eerola E, Salmenlinna S, Vuopio-Varkila J, Rossi T.

Emerg Infect Dis. 2003 Feb;9(2):169-75.

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