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Resultados  1-12 de 34

Weighing serological evidence of human exposure to animal influenza viruses - a literature review.

Autor(es): Sikkema, Reina Saapke; Freidl, Gudrun Stephanie; de Bruin, Erwin; Koopmans, Marion
Fonte: Euro Surveill;21(44)2016 Nov 03.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27874827
Resumo: Assessing influenza A virus strains circulating in animals and their potential to cross the species barrier and cause human infections is important to improve human influenza surveillance and preparedness. We reviewed studies describing serological evidence of human exposure to animal influenza viruses. Comparing serological data is difficult due to a lack of standardisation in study designs and in laboratory methods used in published reports. Therefore, we designed a scoring system to asse (mais)

Improving influenza virological surveillance in Europe: strain-based reporting of antigenic and genetic characterisation data, 11 European countries, influenza season 2013/14.

Autor(es): Broberg, Eeva; Hungnes, Olav; Schweiger, Brunhilde; Prosenc, Katarina; Daniels, Rod; Guiomar, Raquel; Ikonen, Niina; Kossyvakis, Athanasios; Pozo, Francisco; Puzelli, Simona; Thomas, Isabelle; Waters, Allison; Wiman, Åsa; Meijer, Adam
Fonte: Euro Surveill;21(41)2016 Oct 13.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27762211
Resumo: Influenza antigenic and genetic characterisation data are crucial for influenza vaccine composition decision making. Previously, aggregate data were reported to the European Centre for Disease Prevention and Control by European Union/European Economic Area (EU/EEA) countries. A system for collecting case-specific influenza antigenic and genetic characterisation data was established for the 2013/14 influenza season. In a pilot study, 11 EU/EEA countries reported through the new mechanism. We (mais)

Influenza epidemiology, vaccine coverage and vaccine effectiveness in children admitted to sentinel Australian hospitals in 2014: the Influenza Complications Alert Network (FluCAN).

Autor(es): Blyth, Christopher C; Macartney, Kristine K; Hewagama, Saliya; Senenayake, Sanjaya; Friedman, N Deborah; Simpson, Graham; Upham, John; Kotsimbos, Tom; Kelly, Paul; Cheng, Allen C
Fonte: Euro Surveill;21(30)2016 Jul 28.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27494798
Resumo: The Influenza Complications Alert Network (FluCAN) is a sentinel hospital-based surveillance programme operating in all states and territories in Australia. We summarise the epidemiology of children hospitalised with laboratory-confirmed influenza in 2014 and reports on the effectiveness of inactivated trivalent inactivated vaccine (TIV) in children. In this observational study, cases were defined as children admitted with acute respiratory illness (ARI) with influenza confirmed by PCR. Con (mais)

Effects of previous episodes of influenza and vaccination in preventing laboratory-confirmed influenza in Navarre, Spain, 2013/14 season.

Autor(es): Castilla, Jesús; Navascués, Ana; Fernández-Alonso, Mirian; Reina, Gabriel; Albéniz, Esther; Pozo, Francisco; Álvarez, Nerea; Martínez-Baz, Iván; Guevara, Marcela; García-Cenoz, Manuel; Irisarri, Fátima; Casado, Itziar; Ezpeleta, Carmen
Fonte: Euro Surveill;20(22)2016 Jun 02.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27277013
Resumo: We estimated whether previous episodes of influenza and trivalent influenza vaccination prevented laboratory-confirmed influenza in Navarre, Spain, in season 2013/14. Patients with medically-attended influenza-like illness (MA-ILI) in hospitals (n = 645) and primary healthcare (n = 525) were included. We compared 589 influenza cases and 581 negative controls. MA-ILI related to a specific virus subtype in the previous five seasons was defined as a laboratory-confirmed influenza infection wit (mais)

Waning protection of influenza vaccine against mild laboratory confirmed influenza A(H3N2) and B in Spain, season 2014-15.

Autor(es): Gherasim, Alin; Pozo, Francisco; de Mateo, Salvador; Gamarra, Inma Aspiritxaga; García-Cenoz, Manuel; Vega, Tomas; Martínez, Eva; Giménez, Jaume; Castrillejo, Daniel; Larrauri, Amparo
Fonte: Vaccine;34(20): 2371-7, 2016 Apr 29.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27020713
Resumo: INTRODUCTION: The 2014/15 influenza season in Spain was dominated by the circulation of drifted A(H3N2) and co-circulation of B viruses. We present the final estimates of influenza vaccine effectiveness (IVE) against confirmed influenza A(H3N2) and B its evolution along the season and with time since vaccination. METHODS: We used data collected on influenza like illness patients (ILI), systematically swabbed for the presence of influenza viruses within the Spanish Influenza Sentinel Surveil (mais)

Influenza vaccine effectiveness in preventing hospitalization among Beijing residents in China, 2013-15.

Autor(es): Qin, Ying; Zhang, Yi; Wu, Peng; Feng, Shuo; Zheng, Jiandong; Yang, Peng; Pan, Yang; Wang, Quanyi; Feng, Luzhao; Pang, Xinghuo; Puig-Barberà, Joan; Yu, Hongjie; Cowling, Benjamin J
Fonte: Vaccine;34(20): 2329-33, 2016 Apr 29.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27026147
Resumo: BACKGROUND: Estimates of influenza vaccination effectiveness (VE) are valuable for populations where the vaccine has been promoted in order to support vaccination policy and to permit evaluation of vaccination strategies. Such studies would be important for China due to limited data available during seasons when the vaccine strains matched or mismatched the circulating viruses. METHODS: We conducted a test-negative study in hospitals in Beijing. Patients admitted to five hospitals in the ci (mais)

Effectiveness of seasonal influenza vaccine in preventing laboratory-confirmed influenza in primary care in the United Kingdom: 2015/16 mid-season results.

Autor(es): Pebody, Richard; Warburton, Fiona; Ellis, Joanna; Andrews, Nick; Potts, Alison; Cottrell, Simon; Johnston, Jillian; Reynolds, Arlene; Gunson, Rory; Thompson, Catherine; Galiano, Monica; Robertson, Chris; Mullett, David; Gallagher, Naomh; Sinnathamby, Mary; Yonova, Ivelina; Moore, Catherine; McMenamin, Jim; de Lusignan, Simon; Zambon, Maria
Fonte: Euro Surveill;21(13)2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27074651
Resumo: In 2015/16, the influenza season in the United Kingdom was dominated by influenza A(H1N1)pdm09 circulation. Virus characterisation indicated the emergence of genetic clusters, with the majority antigenically similar to the current influenza A(H1N1)pdm09 vaccine strain. Mid-season vaccine effectiveness (VE) estimates show an adjusted VE of 41.5% (95% confidence interval (CI): 3.0-64.7) against influenza-confirmed primary care consultations and of 49.1% (95% CI: 9.3-71.5) against influenza A( (mais)

Predominance of influenza A(H1N1)pdm09 virus genetic subclade 6B.1 and influenza B/Victoria lineage viruses at the start of the 2015/16 influenza season in Europe.

Autor(es): Broberg, Eeva; Melidou, Angeliki; Prosenc, Katarina; Bragstad, Karoline; Hungnes, Olav
Fonte: Euro Surveill;21(13)2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27074657
Resumo: Influenza A(H1N1)pdm09 viruses predominated in the European influenza 2015/16 season. Most analysed viruses clustered in a new genetic subclade 6B.1, antigenically similar to the northern hemisphere vaccine component A/California/7/2009. The predominant influenza B lineage was Victoria compared with Yamagata in the previous season. It remains to be evaluated at the end of the season if these changes affected the effectiveness of the vaccine for the 2015/16 season.

Influenza vaccine effectiveness in adults 65 years and older, Denmark, 2015/16 - a rapid epidemiological and virological assessment.

Autor(es): Emborg, Hanne Dorthe; Krause, Tyra Grove; Nielsen, Lene; Thomsen, Marianne Kragh; Christiansen, Claus Bohn; Skov, Marianne Nielsine; Nielsen, Xiaohui Chen; Weinreich, Lenette Sandborg; Fischer, Thea Kølsen; Rønn, Jesper; Trebbien, Ramona
Fonte: Euro Surveill;21(14)2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27101732
Resumo: In Denmark, both influenza A(H1N1)pdm09 and influenza B co-circulated in the 2015/16 season. We estimated the vaccine effectiveness (VE) of the trivalent influenza vaccine in patients 65 years and older using the test-negative case-control design. The adjusted VE against influenza A(H1N1)pdm09 was 35.0% (95% confidence interval (CI): 11.1-52.4) and against influenza B 4.1% (95% CI: -22.0 to 24.7). The majority of influenza A(H1N1)pdm09 circulating in 2015/16 belonged to the new genetic subgroup subclade 6B.1.

Nadzór nad grypa./ [Influenza surveillance].

Autor(es): Bednarska, Karolina; Hallmann-Szelinska, Ewelina; Kondratiuk, Katarzyna; Brydak, Lidia B
Fonte: Postepy Hig Med Dosw (Online);70: 313-8, 2016 Apr 18.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27117107
Resumo: Influenza surveillance was established in 1947. From this moment WHO (World Health Organization) has been coordinating international cooperation, with a goal of monitoring influenza virus activity, effective diagnostic of the circulating viruses and informing society about epidemics or pandemics, as well as about emergence of new subtypes of influenza virus type A. Influenza surveillance is an important task, because it enables people to prepare themselves for battle with the virus that is (mais)

Concordance of interim and final estimates of influenza vaccine effectiveness: a systematic review.

Autor(es): Leung, Vivian K; Cowling, Benjamin J; Feng, Shuo; Sullivan, Sheena G
Fonte: Euro Surveill;21(16)2016 Apr 21.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27124573
Resumo: The World Health Organization's Global Influenza Surveillance and Response System meets twice a year to generate a recommendation for the composition of the seasonal influenza vaccine. Interim vaccine effectiveness (VE) estimates provide a preliminary indication of influenza vaccine performance during the season and may be useful for decision making. We reviewed 17 pairs of studies reporting 33 pairs of interim and final estimates using the test-negative design to evaluate whether interim e (mais)
Resultados  1-12 de 34