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Haveri A, Ikonen N, Julkunen I, Kantele A, Anttila V, Ruotsalainen E, Nohynek H, Lyytikainen O, Savolainen-Kopra C. Reduced cross-protection against influenza A(H3N2) subgroup 3C.2a and 3C.3a viruses among Finnish healthcare workers vaccinated with 2013/14 seasonal influenza vaccine. ACTA ACUST UNITED AC 2015; 20:21028. [PMID: 25677051 DOI: 10.2807/1560-7917.es2015.20.5.21028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Virus strains in the seasonal influenza vaccine for the 2014/15 northern hemisphere season remained unchanged from those in 2013/14. During spring 2014, drifted influenza A(H3N2) viruses, subgroup 3C.3a, were detected in Finland; another subgroup, 3C.2a, emerged in the 2014/15 season and has predominated. We monitored antibody responses against vaccine and epidemic strains (2013/14 and 2014/15) among Finnish healthcare workers after influenza vaccination with the 2013/14 vaccine. The data suggest reduced cross-protection towards both subgroups of drifted A(H3N2) viruses.
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Affiliation(s)
- A Haveri
- Viral Infections Unit, Department of Infectious Diseases, National Institute for Health and Welfare, Helsinki, Finland
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Jacks A, Ollgren J, Ziegler T, Lyytikainen O. Influenza-associated hospitalisations in Finland from 1996 to 2010: unexpected age-specific burden during the influenza A(H1N1)pdm09 pandemic from 2009 to 2010. Euro Surveill 2012; 17:20276. [PMID: 23040966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023] Open
Abstract
To assess the burden of influenza on the Finnish healthcare system, we analysed hospitalisations during 1996-2010 using the International Classification of Diseases codes potentially related to influenza and its complications from the national hospital discharge registry. To compare the influenza A(H1N1)pdm09 pandemic with previous influenza seasons in 1996-2009, we calculated hospitalisation rates by age- and diagnostic groups. We built a negative binomial regression model based on times series analysis to assess the impact of the pandemic. Influenza-associated hospitalisation rates were higher during the pandemic compared to pre-pandemic influenza seasons for 5-24 year-olds (incidence rate ratio (IRR): 1.52, 95% confidence interval (CI): 1.44-1.60) and 25-64 year-olds (IRR: 1.33, 95% CI: 1.29-1.36), but did not differ for persons aged ≥ 65 years (IRR: 0.98, 95% CI: 0.97-1.00). Hospitalisation rates exceeded the upper limit of the prediction line by 177% in 5-24 year-olds, 66% in 0-4 year-olds and 57% in 25-64 year-olds. During the influenza season of 2003/04, all age groups had higher-than-expected hospitalisation rates, whereas other seasonal peaks were only notable among persons aged ≥ 65 years. These age-specific differences in the hospital burden underscore the importance of the continuous surveillance of hospitalisations in order to evaluate immunisation priorities for seasonal influenza and pandemic preparedness including use of antiviral medication.
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Affiliation(s)
- A Jacks
- European Programme for Intervention Epidemiology Training, European Centre for Disease Prevention and Control, Stockholm, Sweden.
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Kanerva M, Ollgren J, Lyytikainen O, Agthe N, Mottonen T, Kauppinen M, Laurila K, Suomalainen P, Vuorela R, Ryhta I, Vastamaki R, Helen M, Hietaniemi K, Varis T, Eliin L, Nieminen J, Skogberg K, Salminen R, Yrjonsalo ML, Kimmo AM, Sandberg K, Tuppurainen T, Mattila K, Aalto A, Anttila VJ, Estlander C, Hamalainen M, Jalkanen M, Kanerva M, Kuutamo T, Lappalainen T, Mattila P, Pipping D, Ratia M, Sammalkorpi K, Simons L, Tommila P, Totterman I, Lehtinen P, Torvinen S, Eklund M, Fellman M, Mikkola J, Haapaniemi L, Junka A, Jakobsson A, Leppaaho-Lakka J, Patsi S, Rummukainen M, Tiitinen T, Liikka M, Hamalainen S, Koivula I, Rissanen AM, Ruotsalainen E, Terasvirta H, Hannola K, Marttinen T, Palosara J, Pietikainen R, Kaukoniemi U, Nurkkala-Pitko T, Broas M, Isojarvi J, Jagerroos H, Jankala E, Niemi P, Poyry S, Raisanen L, Leukka M, Dahl S, Ijas P, Karkkainen P, Vuorinen S, Heikkila H, Kaija T, Teirila I, Haapala J, Harkonen M, Reiman A, Salonen J, Sarkkinen H, Sihvola H, Turunen P, Taskila H, Virranniemi L, Huttunen S, Rintala E, Uusitalo-Seppala R, Pulli T, Sistonen A, Panttila A, Saikku J, Tapanainen M, Lumio J, Sinkkonen J, Routamaa M, Terho K, Elomaa N, Eriksen-Neuman B. Benchmarking antibiotic use in Finnish acute care hospitals using patient case-mix adjustment. J Antimicrob Chemother 2011; 66:2651-4. [DOI: 10.1093/jac/dkr333] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Lyytikainen O, Kuusi M, Snellman M, Virtanen M, Eskola J, Ronkko E, Ikonen N, Julkunen I, Ziegler T, Ruutu P. Surveillance of influenza in Finland during the 2009 pandemic, 10 May 2009 to 8 March 2010. Euro Surveill 2011; 16:19908. [PMID: 21794216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Affiliation(s)
- O Lyytikainen
- National Institute for Health and Welfare (THL), Helsinki, Finland
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Fusco FM, Puro V, Baka A, Bannister B, Brodt HR, Brouqui P, Follin P, Gjorup IE, Gottschalk R, Hemmer R, Hoepelman IM, Jarhall B, Kutsar K, Lanini S, Lyytikainen O, Maltezou HC, Mansinho K, Marti MC, Ott K, Peleman R, Perronne C, Sheehan G, Siikamakii H, Skinhoj P, Trilla A, Vetter N, Ippolito G. Isolation rooms for highly infectious diseases: an inventory of capabilities in European countries. J Hosp Infect 2009; 73:15-23. [PMID: 19647337 PMCID: PMC7114849 DOI: 10.1016/j.jhin.2009.06.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2008] [Accepted: 06/10/2009] [Indexed: 01/23/2023]
Abstract
Isolation of patients with highly infectious diseases (HIDs) in hospital rooms with adequate technical facilities is essential to reduce the risk of spreading disease. The European Network for Infectious Diseases (EUNID), a project co-funded by European Commission and involving 16 European Union member states, performed an inventory of high level isolation rooms (HIRs, hospital rooms with negative pressure and anteroom). In participating countries, HIRs are available in at least 211 hospitals, with at least 1789 hospital beds. The adequacy of this number is not known and will depend on prevailing circumstances. Sporadic HID cases can be managed in the available HIRs. HIRs could also have a role in the initial phases of an influenza pandemic. However, large outbreaks due to natural or to bioterrorist events will need management strategies involving healthcare facilities other than HIRs.
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Affiliation(s)
- F M Fusco
- National Institution for Infectious Diseases 'Lazzaro Spallanzani', Rome, Italy.
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Laupland K, Schonheyder H, Kennedy K, Lyytikainen O, Valiquette L, Galbraith J, Collignon P, Church D, Gregson D, Kibsey P. P265 Development of a multi-national population-based bacteremia surveillance collaborative. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70484-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Magiorakos AP, Suetens C, Boyd L, Costa C, Cunney R, Drouvot V, Farrugia C, Fernandez-Maillo MM, Iversen BG, Leens E, Michael S, Moro ML, Reinhardt C, Serban R, Vatcheva-Dobrevska R, Wilson K, Heisbourg E, Maltezou HC, Strauss R, Borocz K, Dolinsek M, Dumpis U, Erne S, Gudlaugsson O, Heczko P, Hedlova D, Holt J, Joe L, Lyytikainen O, Riesenfeld-Orn I, Stefkovikova M, Valinteliene R, Voss A, Monnet DL. National hand hygiene campaigns in Europe, 2000-2009. Euro Surveill 2009; 14:19190. [PMID: 19422767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023] Open
Abstract
Hand hygiene represents the single most effective way to prevent healthcare-associated infections. The World Health Organization, as part of its First Global Patient Safety Challenge, recommends implementation of multi-faceted strategies to increase compliance with hand hygiene. A questionnaire was sent by the European Centre for Disease Prevention and Control to 30 European countries, regarding the availability and organisation of their national hand hygiene campaigns. All countries responded. Thirteen countries had organised at least one national campaign during the period 2000-2009 and three countries were in the process of organising a national campaign. Although the remaining countries did not have a national campaign, several reported regional and local hand hygiene activities or educational resources on national websites.
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Affiliation(s)
- A P Magiorakos
- European Centre for Disease Prevention and Control, Stockholm.
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8
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Kanerva M, Blom M, Tuominen U, Kolho E, Anttila V, Vaara M, Virolainen-Julkunen A, Lyytikainen O. P5.01 Costs of an Outbreak of Methicillin-Resistant Staphylococcus aureus. J Hosp Infect 2006. [DOI: 10.1016/s0195-6701(06)60098-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ponka A, Maunula L, Von Bonsdorff C, Lyytikainen O. Outbreak oof calicivirus gastroenteritis associated with eating frozen raspberries. Euro Surveill 1999; 4:66-69. [PMID: 12631898 DOI: 10.2807/esm.04.06.00056-en] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Small round structured viruses (SRSVs - for example, calici-, astro-, and entero-viruses) are the commonest causes of outbreaks of non-bacterial gastroenteritis worldwide. Transmission of SRSVs by water and by various foods - including salads, bakery prod
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Reintjes R, Pohle M, Vieth U, Lyytikainen O, Timm H, Schreier E, Petersen L. Community-wide outbreak of enteroviral illness caused by echovirus 30: a cross-sectional survey and a case-control study. Pediatr Infect Dis J 1999; 18:104-8. [PMID: 10048680 DOI: 10.1097/00006454-199902000-00005] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND In June, 1997, 21 children from a single community in Germany were hospitalized with aseptic meningitis. An epidemiologic investigation was conducted to determine the extent of the outbreak and risk factors for illness. METHOD The extent of the outbreak was assessed with a cross-sectional survey of every 10th child listed in the town register among the 2240 town children < 16 years old. A case-control study determined risk factors for illness. Sixty-two cases were identified through the cross-sectional survey from hospitalized persons and from persons seen by local physicians. Controls were 114 asymptomatic persons identified from the cross-sectional survey. RESULTS The overall attack rate was 16%, with the highest attack rates (24%) among the 6- to 8-year olds. Onsets occurred during a 37-day period. Among the 2240 town children <16 years of age, an estimated 353 met the case definition for enteroviral illness, 168 visited a doctor and 21 were hospitalized. Data from the case-control study indicated that contact with an ill household member [odds ratio (OR) = 6.3; 95% confidence interval (CI) 2.6 to 15.5], day-care attendance (OR = 2.6; 95% CI 1.1 to 6.2) and playground use, either two to three times per week (OR = 3.7; 95% CI 1.3 to 10.2) or daily (OR = 4.3; 95% CI 1.6 to 11.3), were risk factors for illness. CONCLUSION Echovirus 30 caused substantial morbidity during this community outbreak caused by person-to-person spread. Household contacts, day-care centers and playgrounds were prominent risk factors for transmission.
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Affiliation(s)
- R Reintjes
- European Programme for Intervention Epidemiology Training, National Institute for Public Health and the Environment, Bilthoven, The Netherlands.
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Lyytikainen O, Ziese T, Schwartlander B, Matzdorff P, Kuhnhen C, Burger C, Krug W, Petersen LR. Outbreak of Q fever in Lohra-Rollshausen, Germany, spring 1996. Euro Surveill 1997; 2:9-11. [PMID: 12631826 DOI: 10.2807/esm.02.02.00136-en] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Q fever is an acute (and sometimes chronic) febrile illness caused by the rickettsial organism Coxiella burnetii. The commonest animal reservoirs for C. burnetiiare cattle, sheep, and goats. Infected animals shed the organisms, which resist desiccation, i
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Affiliation(s)
- O Lyytikainen
- Centers for Disease Control and Prevention, Fort Collins, USA
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Lautenschlager I, Lyytikainen O, Jokipii L, Jokipii A, Maiche A, Ruutu T, Tukiainen P, Ruutu P. Immunodetection of Pneumocystis carinii in bronchoalveolar lavage specimens compared with methenamine silver stain. J Clin Microbiol 1996; 34:728-30. [PMID: 8904447 PMCID: PMC228879 DOI: 10.1128/jcm.34.3.728-730.1996] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Immunodetection of Pneumocystis carinii, based on immunofluorescence and use of a monoclonal antibody specific for an antigen located within the cyst wall and detectable after trypsin digestion only, was compared with a methenamine silver stain in 553 bronchoalveolar lavage specimens from immunosuppressed patients. P. carinii was found by immunofluorescence in 72 (86%) and by silver stain in 68 (81%) of the total of 84 positive samples detected by either or both of these methods.
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Affiliation(s)
- I Lautenschlager
- Laboratory Department, Helsinki University Central Hospital, Finland
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