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Pesquisa | Influenza A (H1N1)

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Resultados  1-12 de 38
1.

Epidemiological and Virological Characteristics of Influenza in Chongqing, China, 2011-2015.

Autor(es): Qi, Li; Xiong, Yu; Xiao, Bangzhong; Tang, Wenge; Ling, Hua; Long, Jiang; Xiao, Dayong; Zhao, Han; Ye, Sheng; Chen, Shuang; Yu, Zhen; Li, Qin
Fonte: PLoS One;11(12): e0167866, 2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27936139
Resumo: BACKGROUND: Chongqing is the largest municipality and located in Southwestern of China, with over 30 million registered inhabitants. There are few reports regarding the epidemiology of influenza in Chongqing. The objective of the paper is to explore the epidemiology of influenza in Chongqing, in order to provide scientific basis for prevention and control of influenza. METHODOLOGY /PRINCIPAL FINDINGS: From 2011 to 2015, we collected information on influenza-like illness (ILI) patients fulfi (mais)
2.

An Epidemiological Analysis of Summer Influenza Epidemics in Okinawa.

Autor(es): Sunagawa, Satoko; Iha, Yoshikazu; Taira, Katsuya; Okano, Sho; Kinjo, Takeshi; Higa, Futoshi; Kuba, Kazufumi; Tateyama, Masao; Nakamura, Katsunori; Nakamura, Shota; Motooka, Daisuke; Horii, Toshihiro; Parrott, Gretchen L; Fujita, Jiro
Fonte: Intern Med;55(24): 3579-3584, 2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27980256
Resumo: Objective This study evaluates the difference between winter influenza and summer influenza in Okinawa. Methods From January 2007 to June 2014, weekly rapid antigen test (RAT) results performed in four acute care hospitals were collected for the surveillance of regional influenza prevalence in the Naha region of the Okinawa Islands. Results An antigenic data analysis revealed that multiple H1N1 and H3N2 viruses consistently co-circulate in Okinawa, creating synchronized seasonal patterns an (mais)
3.

National Influenza Surveillance in the Philippines from 2006 to 2012: seasonality and circulating strains.

Autor(es): Lucero, Marilla G; Inobaya, Marianette T; Nillos, Leilani T; Tan, Alvin G; Arguelles, Vina Lea F; Dureza, Christine Joy C; Mercado, Edelwisa S; Bautista, Analisa N; Tallo, Veronica L; Barrientos, Agnes V; Rodriguez, Tomas; Olveda, Remigio M
Fonte: BMC Infect Dis;16(1): 762, 2016 Dec 19.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27993136
Resumo: BACKGROUND: The results of routine influenza surveillance in 13 regions in the Philippines from 2006 to 2012 are presented, describing the annual seasonal epidemics of confirmed influenza virus infection, seasonal and alert thresholds, epidemic curve, and circulating influenza strains. METHODS: Retrospective analysis of Philippine influenza surveillance data from 2006 to 2012 was conducted to determine seasonality with the use of weekly influenza positivity rates and calculating epidemic cu (mais)
5.

Update: Influenza Activity - United States, October 2-December 17, 2016.

Autor(es): Shang, Mei; Blanton, Lenee; Kniss, Krista; Mustaquim, Desiree; Alabi, Noreen; Barnes, Stephen; Budd, Alicia; Davlin, Stacy L; Kramer, Natalie; Garg, Shikha; Cummings, Charisse N; Flannery, Brendan; Fry, Alicia M; Grohskopf, Lisa A; Olsen, Sonja J; Bresee, Joseph; Sessions, Wendy; Garten, Rebecca; Xu, Xiyan; Elal, Anwar Isa Abd; Gubareva, Larisa; Barnes, John; Wentworth, David E; Burns, Erin; Katz, Jacqueline; Jernigan, Daniel; Brammer, Lynnette
Fonte: MMWR Morb Mortal Wkly Rep;65(5051): 1439-1444, 2016 Dec 30.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 28033315
Resumo: This report summarizes U.S. influenza activity during October 2-December 17, 2016. Influenza activity in the United States remained low in October and has been slowly increasing since November. Influenza A viruses were identified most frequently, with influenza A (H3N2) viruses predominating. Most influenza viruses characterized during this period were genetically or antigenically similar to the reference viruses representing vaccine components recommended for production in the 2016-17 Northern Hemisphere influenza vaccines.
6.

Coherence of Influenza Surveillance Data across Different Sources and Age Groups, Beijing, China, 2008-2015.

Autor(es): Wu, Zhenyu; Sun, Xiaoyu; Chu, Yanhui; Sun, Jingyi; Qin, Guoyou; Yang, Lin; Qin, Jingning; Xiao, Zheng; Ren, Jian; Qin, Di; Wang, Xiling; Zheng, Xueying
Fonte: PLoS One;11(12): e0169199, 2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 28036373
Resumo: Influenza is active during the winter and spring in the city of Beijing, which has a typical temperate climate with four clear distinct seasons. The clinical and laboratory surveillance data for influenza have been used to construct critical indicators for influenza activities in the community, and previous studies have reported varying degrees of association between laboratory-confirmed influenza specimens and outpatient consultation rates of influenza-like illness in subtropical cities. H (mais)
7.

Real-time real-world analysis of seasonal influenza vaccine effectiveness: method development and assessment of a population-based cohort in Stockholm County, Sweden, seasons 2011/12 to 2014/15.

Autor(es): Leval, Amy; Hergens, Maria Pia; Persson, Karin; Örtqvist, Åke
Fonte: Euro Surveill;21(43)2016 Oct 27.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27813473
Resumo: Real-world estimates of seasonal influenza vaccine effectiveness (VE) are important for early detection of vaccine failure. We developed a method for evaluating real-time in-season vaccine effectiveness (IVE) and overall seasonal VE. In a retrospective, register-based, cohort study including all two million individuals in Stockholm County, Sweden, during the influenza seasons from 2011/12 to 2014/15, vaccination status was obtained from Stockholm's vaccine register. Main outcomes were hospi (mais)
8.

Forecasting Influenza Outbreaks in Boroughs and Neighborhoods of New York City.

Autor(es): Yang, Wan; Olson, Donald R; Shaman, Jeffrey
Fonte: PLoS Comput Biol;12(11): e1005201, 2016 Nov.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27855155
Resumo: The ideal spatial scale, or granularity, at which infectious disease incidence should be monitored and forecast has been little explored. By identifying the optimal granularity for a given disease and host population, and matching surveillance and prediction efforts to this scale, response to emergent and recurrent outbreaks can be improved. Here we explore how granularity and representation of spatial structure affect influenza forecast accuracy within New York City. We develop network mod (mais)
9.

Transmissibility of the Influenza Virus during Influenza Outbreaks and Related Asymptomatic Infection in Mainland China, 2005-2013.

Autor(es): Chen, Tao; Chen, Tianmu; Liu, Ruchun; Xu, Cuiling; Wang, Dayan; Chen, Faming; Zhu, Wenfei; Zhang, Xixing; Yang, Jing; Wang, Lijie; Xie, Zhi; Chen, Yongkun; Bai, Tian; Li, Yelan; Wang, Zhiyu; Zhang, Min; Chen, Shuilian; Shu, Yuelong
Fonte: PLoS One;11(11): e0166180, 2016.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27880774
Resumo: We collected 2768 Influenza-like illness emergency public health incidents from April 1, 2005 to November 30, 2013reported in the Emergency Public Reporting System. After screening by strict inclusion and exclusion criteria, there were 613 outbreaks analyzed with susceptible-exposed-infectious/asymptomatic-removed model in order to estimate the proportion of asymptomatic individuals (p) and the effective reproduction number (Rt). The relation between Rt and viral subtypes, regions, outbreak (mais)
10.

Neues zur Influenza./ [Influenza: Whats new?]

Autor(es): Salzberger, Bernd; Schmidt, Barbara
Fonte: Dtsch Med Wochenschr;141(20): 1451-1454, 2016 Sep.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27701689
Resumo: The burden of disease of influenza in Germany has been dominated by high rates of complications in elderly patients in years with high circulation of H3N2 viruses after the introduction of the new H1N1 strain in 2009. Human infections with avian influenza viruses occur mostly in China. Due to the potential of reassortment with human strains these cases are monitored closely. The efficacy of neuraminidase inhibitors (NI) has been newly rated. In randomized studies effects on reduction of com (mais)
11.

Modelling of seasonal influenza and estimation of the burden in Tunisia.

Autor(es): Chlif, S; Aissi, W; Bettaieb, J; Kharroubi, G; Nouira, M; Yazidi, R; El Moussi, A; Maazaoui, L; Slim, A; Salah, A Ben
Fonte: East Mediterr Health J;22(7): 460-467, 2016 Oct 02.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27714740
Resumo: The burden of influenza was estimated from surveillance data in Tunisia using epidemiological parameters of transmission with WHO classical tools and mathematical modelling. The incidence rates of influenza-associated influenza-like illness (ILI) per 100 000 were 18 735 in 2012/2013 season; 5536 in 2013/14 and 12 602 in 2014/15. The estimated proportions of influenza-associated ILI in the total outpatient load were 3.16%; 0.86% and 1.98% in the 3 seasons respectively. Distribution of influe (mais)
12.

Virological Surveillance of Influenza in Four Recent Post-Pandemic Seasons (2010/11 to 2013/14) in Bulgaria.

Autor(es): Korsun, Neli; Angelova, Svetla; Teodosieva, Ani
Fonte: Cent Eur J Public Health;24(3): 180-187, 2016 Sep.
MEDLINE - Literatura Internacional em Ciências da Saúde PMID: 27755859
Resumo: AIM: Influenza virological surveillance is an essential tool for studying the evolution of influenza viruses as well as for annual updating of the vaccine composition. The aim of the present study is to analyse the circulation of the influenza viruses in Bulgaria during the four recent post-pandemic seasons. METHODS: A total of 3,681 respiratory samples from patients with influenza like illness (ILI) or acute respiratory illness (ARI) were tested for influenza viruses using Real Time RT-PCR (mais)
Resultados  1-12 de 38