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Influenza mortality

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https://www.readbyqxmd.com/read/29148920/the-unexpected-impact-of-vaccines-on-secondary-bacterial-infections-following-influenza
#1
Amber M Smith, Victor C Huber
Influenza virus infections remain a significant health burden worldwide, despite available vaccines. Factors that contribute to this include a lack of broad coverage by current vaccines and continual emergence of novel virus strains. Further complicating matters, when influenza viruses infect a host, severe infections can develop when bacterial pathogens invade. Secondary bacterial infections (SBIs) contribute to a significant proportion of influenza-related mortality, with Streptococcus pneumoniae, Staphylococcus aureus, Streptococcus pyogenes, and Haemophilus influenzae as major coinfecting pathogens...
November 17, 2017: Viral Immunology
https://www.readbyqxmd.com/read/29145619/intranasal-immunization-with-an-attenuated-pep27-mutant-provides-protection-from-influenza-virus-and-secondary-pneumococcal-infections
#2
Seung Han Seon, Jung Ah Choi, Eunji Yang, Sukneung Pyo, Man Ki Song, Dong-Kwon Rhee
During influenza pandemics, secondary pneumococcal infections cause excessive mortality. However, the current pneumococcal polysaccharide conjugate vaccine, PCV 13, provides only limited protection against secondary infection. Therefore, a more effective pneumococcal vaccine is required to protect against secondary pneumococcal infections. Here, intranasal immunization with an attenuated pneumococcal pep27 mutant provides protection from influenza virus infection, and also from secondary pneumococcal challenge...
November 14, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29145441/distinct-t-and-nk-cell-populations-may-serve-as-immune-correlates-of-protection-against-symptomatic-pandemic-influenza-a-h1n1-virus-infection-during-pregnancy
#3
Miloje Savic, Jennifer L Dembinski, Ida Laake, Olav Hungnes, Rebecca Cox, Fredrik Oftung, Lill Trogstad, Siri Mjaaland
Maternal influenza infection during pregnancy is associated with increased risk of morbidity and mortality. However, the link between the anti-influenza immune responses and health-related risks during infection is not well understood. We have analyzed memory T and NK cell mediated immunity (CMI) responses in pandemic influenza A(H1N1)pdm09 (pdm09) virus infected non-vaccinated pregnant women participating in the Norwegian Influenza Pregnancy Cohort (NorFlu). The cohort includes information on immunization, self-reported health and disease status, and biological samples (plasma and PBMC)...
2017: PloS One
https://www.readbyqxmd.com/read/29144598/estimating-burden-of-influenza-associated-influenza-like-illness-and-severe-acute-respiratory-infection-at-public-health-care-facilities-in-romania-during-the-2011-12-2015-16-influenza-seasons
#4
Giedre Gefenaite, Adriana Pistol, Rodica Popescu, Odette Popovici, Daniel Ciurea, Christiaan Dolk, Mark Jit, Diane Gross
BACKGROUND: Influenza is responsible for substantial morbidity and mortality, but there is limited information on reliable disease burden estimates, especially from middle-income countries in the WHO European Region. OBJECTIVES: To estimate the incidence of medically attended influenza-associated influenza-like illness (ILI) and hospitalizations due to severe acute respiratory infection (SARI) presenting to public health care facilities in Romania. PATIENTS/METHODS: Sentinel influenza surveillance data for ILI and SARI from 2011/12-2015/16, including virological data, was used to estimate influenza-associated ILI and SARI incidence/100000 and their 95% confidence intervals (95% CI)...
November 16, 2017: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/29138085/in-silico-design-cloning-expression-and-immunologic-evaluation-of-ed-fusion-protein-of-nt-h-influenzae
#5
Ava Behrouzi, Saeid Bouzari, Mana Oloomi, Abolfaz Fateh, Farzam Vaziri, Parviz Afrough, Amir Amanzadeh, Seyed Davar Siadat
Infections due to nontypeable Haemophilus influenzae (NTHi) are important causes of child mortality throughout the world. Given the lack of effective vaccines for these strains and the spread and prevalence of these infections in the world, it is necessary to design novel vaccine candidates against these strains. D and E proteins are conserved membrane-specific lipoproteins among encapsulated and non-encapsulated H. influenza strains, which, according to the exposure surface and conservation degree between both strains, can be considered as vaccine candidates suitable for studies...
November 11, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/29138015/anti-phase-synchronization-of-influenza-a-h1n1-and-a-h3n2-in-hong-kong-and-countries-in-the-north-temperate-zone
#6
Alice P Y Chiu, Qianying Lin, Edwin Yiu Nam Tang, Daihai He
OBJECTIVES: Influenza affects 10% of the global population annually. Hong Kong is a subtropical city close to the North Temperate Zone (NTZ). Its influenza-associated mortality rates were 27.53, 79.55, 36.94, 48.72 per one million person-years in 2014, 2015, 2016 and January to July 2017 respectively. Our study aims at exploring the temporal patterns of influenza A subtypes both in Hong Kong and the NTZ. METHOD: Weekly reported cases of Influenza A/H1N1 and A/H3N2 from January 2010 to July 2017 were downloaded from the Centre for Health Protection in HK and the FluNet provided by the World Health Organization...
November 11, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/29137330/virtual-screening-approach-to-identifying-influenza-virus-neuraminidase-inhibitors-using-molecular-docking-combined-with-machine-learning-based-scoring-function
#7
Li Zhang, Hai-Xin Ai, Shi-Meng Li, Meng-Yuan Qi, Jian Zhao, Qi Zhao, Hong-Sheng Liu
In recent years, an epidemic of the highly pathogenic avian influenza H7N9 virus has persisted in China, with a high mortality rate. To develop novel anti-influenza therapies, we have constructed a machine-learning-based scoring function (RF-NA-Score) for the effective virtual screening of lead compounds targeting the viral neuraminidase (NA) protein. RF-NA-Score is more accurate than RF-Score, with a root-mean-square error of 1.46, Pearson's correlation coefficient of 0.707, and Spearman's rank correlation coefficient of 0...
October 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29135343/effects-of-influenza-immunization-on-pneumonia-in-the-elderly
#8
Jung Yeon Heo, Joon Young Song, Ji Yun Noh, Min Joo Choi, Jin Gu Yoon, Saem Na Lee, Hee Jin Cheong, Woo Joo Kim
Influenza virus is a common pathogen implicated in respiratory tract infections, annually affecting up to 20% of the general population, and pneumonia is a leading cause of death after influenza infection. Post-influenza pneumonia is especially common in the elderly and chronically ill patients. The risk of post-influenza pneumonia is significantly increased according to the number of concurrent comorbidities. Vaccination is the primary measure used to abate influenza epidemics and associated complications...
November 14, 2017: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/29128020/respiratory-viral-infections-in-solid-organ-and-hematopoietic-stem-cell-transplantation
#9
REVIEW
Grant C Paulsen, Lara Danziger-Isakov
Respiratory viruses are common in solid organ and hematopoietic stem cell transplant recipients and a recognized cause of significant morbidity and mortality. Epidemiology, risk factors, and attributable mortality in both populations are reviewed. In addition, virus-specific prevention and treatment options, including emerging investigational therapies, are discussed for respiratory syncytial virus, influenza, adenovirus, parainfluenza, and other respiratory viruses.
December 2017: Clinics in Chest Medicine
https://www.readbyqxmd.com/read/29126805/determinants-of-influenza-vaccination-among-high-risk-black-and-white-adults
#10
Sandra Crouse Quinn, Amelia M Jamison, Vicki S Freimuth, Ji An, Gregory R Hancock
BACKGROUND: Adults with chronic conditions are at much greater risk of influenza-related morbidity and mortality, yet flu vaccine uptake remains suboptimal. Research focused on the high-risk population has been limited, particularly related to racial disparities in vaccination. We explore a broad range of demographic, racial, and psychosocial factors to identify predictors of vaccination among high-risk adults, with a focus on identify differences between Black and White adults. METHODS: We conducted an online survey in March 2015, utilizing international research firm GfK's KnowledgePanel, for a nationally representative sample of Black and White adults (≥18, USA) and limited analysis adults with high-risk of influenza-related complications...
November 7, 2017: Vaccine
https://www.readbyqxmd.com/read/29124073/first-necrotizing-fasciitis-caused-by-haemophilus-influenza-serotype-a
#11
Giang T Quach, Jared Frisby, Kurt Kralovich, Mustafa Bohra
Necrotizing fasciitis (NF) is an infrequently encountered skin infection that has high morbidity and mortality, even with prompt medical and surgical intervention. We describe the case of a 67-year-old male presenting with significant NF in his left lower extremity, despite aggressive surgical intervention, and included multiple surgical debridements, ACell Matrix, split-thickness, and negative wound VAC therapy. Ultimately, this patient required a below the knee amputation. This is the first documented case of Haemophilus influenza type a causing NF...
October 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/29122735/intranasal-immunization-with-dry-powder-vaccines
#12
Tania F Bahamondez-Canas, Zhengrong Cui
Vaccination represents a cost-effective weapon for disease prevention and has proven to dramatically reduce the incidences of several diseases that once were responsible for significant mortality and morbidity worldwide. The nasal cavity constitutes the initial stage of the respiratory system and the first contact with inhaled pathogens. The intranasal (IN) route for vaccine administration is an attractive alternative to injection, due to the ease of administration as well as better patient compliance. Many published studies have demonstrated the safety and effectiveness of IN immunization with liquid vaccines...
November 6, 2017: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29120150/incidence-etiology-and-outcome-of-ventilator-associated-pneumonia-in-patients-with-percutaneous-tracheotomy
#13
Tihana Magdić Turković, Melanija Obraz, Milana Zlatić Glogoški, Ida Juranić, Bruna Bodulica, Josipa Kovačić
Although the incidence of ventilator-associated pneumonia (VAP) is very high, there are still many uncertainties about clinical course of VAP among tracheotomized patients. The goal of the present study was to determine the impact of tracheotomy on VAP incidence and etiology, as well as outcome of VAP patients with tracheotomy. The study was conducted in a 15-bed Surgical and Neurosurgical Intensive Care Unit (ICU), Sestre milosrdnice University Hospital Center in Zagreb, Croatia. The study included all patients undergoing only percutaneous tracheotomy during the study period...
March 2017: Acta Clinica Croatica
https://www.readbyqxmd.com/read/29120017/review-of-maternal-immunisation-during-pregnancy-focus-on-pertussis-and-influenza
#14
Géraldine Blanchard-Rohner, Christiane Eberhardt
Seasonal influenza and pertussis infections are known to be significant causes of morbidity and mortality in neonates and infants worldwide. Influenza has also been associated with severe complications in pregnant women and after delivery. The most efficient and safe strategy to protect mothers and their offspring is maternal immunisation during pregnancy. The maternal antibodies thus acquired are transferred to the fetus as of the second trimester and confer passive immunity until the first infant immunisations...
November 9, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29114729/cost-effectiveness-of-strategies-for-offering-influenza-vaccine-in-the-pediatric-emergency-department
#15
Rebecca J Hart, Michelle D Stevenson, Michael J Smith, A Scott LaJoie, Keith Cross
Importance: Influenza is a significant public health burden, causing morbidity and mortality in children, yet vaccination rates remain low. Vaccination in the pediatric emergency department (PED) setting may be beneficial but, to date, has not been proven to be cost-effective. Objective: To compare the cost-effectiveness of 4 strategies for PED-based influenza vaccine: offering vaccine to all patients, only to patients younger than 5 years, only to high-risk patients (all ages), or to no patients...
November 6, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/29113630/end-of-season-influenza-vaccine-effectiveness-in-adults-and-children-united-kingdom-2016-17
#16
Richard Pebody, Fiona Warburton, Joanna Ellis, Nick Andrews, Alison Potts, Simon Cottrell, Arlene Reynolds, Rory Gunson, Catherine Thompson, Monica Galiano, Chris Robertson, Naomh Gallagher, Mary Sinnathamby, Ivelina Yonova, Ana Correa, Catherine Moore, Muhammad Sartaj, Simon de Lusignan, Jim McMenamin, Maria Zambon
IntroductionThe United Kingdom is in the fourth season of introducing a universal childhood influenza vaccine programme. The 2016/17 season saw early influenza A(H3N2) virus circulation with care home outbreaks and increased excess mortality particularly in those 65 years or older. Virus characterisation data indicated emergence of genetic clusters within the A(H3N2) 3C.2a group which the 2016/17 vaccine strain belonged to. Methods: The test-negative case-control (TNCC) design was used to estimate vaccine effectiveness (VE) against laboratory confirmed influenza in primary care...
November 2017: Euro Surveillance: Bulletin Européen sur les Maladies Transmissibles, European Communicable Disease Bulletin
https://www.readbyqxmd.com/read/29108905/-maternal-deaths-due-to-infectious-cause-results-from-the-french-confidential-enquiry-into-maternal-deaths-2010-2012
#17
A Rigouzzo, V Tessier, L Zieleskiewicz
Over the period 2010-2012, maternal mortality from infectious causes accounted for 5% of maternal deaths by direct causes and 16% of maternal deaths by indirect causes. Among the 22 deaths caused by infection occurred during this period, 6 deaths were attributed to direct causes from genital tract origin, confirming thus the decrease in direct maternal deaths by infection during the last ten years. On the contrary, indirect maternal deaths by infection, from extragenital origin, doubled during the same period, with 16 deaths in the last triennium, dominated by winter respiratory infections, particularly influenza: the 2009-2010 influenza A (H1N1) virus pandemic was the leading cause of indirect maternal mortality by infection during the studied period...
November 3, 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/29103391/identifying-the-genetic-basis-for-resistance-to-avian-influenza-in-commercial-egg-layer-chickens
#18
W Drobik-Czwarno, A Wolc, J E Fulton, J Arango, T Jankowski, N P O'Sullivan, J C M Dekkers
Two highly pathogenic avian influenza (HPAI) outbreaks have affected commercial egg production flocks in the American continent in recent years; a H7N3 outbreak in Mexico in 2012 that caused 70% to 85% mortality and a H5N2 outbreak in the United States in 2015 with over 99% mortality. Blood samples were obtained from survivors of each outbreak and from age and genetics matched non-affected controls. A total of 485 individuals (survivors and controls) were genotyped with a 600 k single nucleotide polymorphism (SNP) array to detect genomic regions that influenced the outcome of highly pathogenic influenza infection in the two outbreaks...
November 6, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/29102115/molecular-epidemiology-of-swine-influenza-a-viruses-in-the-southeastern-united-states-highlights-regional-differences-in-circulating-strains
#19
Constantinos S Kyriakis, Ming Zhang, Stefan Wolf, Les P Jones, Byoung-Shik Shim, Anna H Chocallo, Jarod M Hanson, MingRui Jia, Dong Liu, Ralph A Tripp
Swine influenza A virus (IAV) can cause widespread respiratory disease with high morbidity, low mortality, and have a substantial economic impact to the swine industry. Swine infection may contribute to pandemic IAV given their susceptibility to both avian and human IAVs. Currently, three IAV subtypes (H1N1, H3N2 and H1N2) circulate in swine in North America frequently combining gene segments from avian or human viruses. This study investigated the prevalence of IAV in commercial swine herds. A total of 1878 oral fluid samples were collected from pigs of all ages from 201 commercial farms located in North Carolina and South Carolina...
November 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/29101284/genetic-mannose-binding-lectin-deficiency-is-associated-with-airway-microbiota-diversity-and-reduced-exacerbation-frequency-in-copd
#20
Alison J Dicker, Megan L Crichton, Andrew J Cassidy, Gill Brady, Adrian Hapca, Roger Tavendale, Gisli G Einarsson, Elizabeth Furrie, J Stuart Elborn, Stuart Schembri, Sara E Marshall, Colin N A Palmer, James D Chalmers
BACKGROUND: In cystic fibrosis and bronchiectasis, genetic mannose binding lectin (MBL) deficiency is associated with increased exacerbations and earlier mortality; associations in COPD are less clear. Preclinical data suggest MBL interferes with phagocytosis of Haemophilus influenzae, a key COPD pathogen. We investigated whether MBL deficiency impacted on clinical outcomes or microbiota composition in COPD. METHODS: Patients with COPD (n=1796) underwent MBL genotyping; linkage to health records identified exacerbations, lung function decline and mortality...
November 3, 2017: Thorax
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