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Elderly and influenza

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https://www.readbyqxmd.com/read/28096374/phylogenetic-analysis-of-the-human-antibody-repertoire-reveals-quantitative-signatures-of-immune-senescence-and-aging
#1
Charles F A de Bourcy, Cesar J Lopez Angel, Christopher Vollmers, Cornelia L Dekker, Mark M Davis, Stephen R Quake
The elderly have reduced humoral immunity, as manifested by increased susceptibility to infections and impaired vaccine responses. To investigate the effects of aging on B-cell receptor (BCR) repertoire evolution during an immunological challenge, we used a phylogenetic distance metric to analyze Ig heavy-chain transcript sequences in both young and elderly individuals before and after influenza vaccination. We determined that BCR repertoires become increasingly specialized over a span of decades, but less plastic...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28094076/influenza-vaccination-in-older-people-with-diabetes-and-their-household-contacts
#2
Lin Yang, Hairong Nan, Jun Liang, Yin Hang Chan, Laam Chan, Rita Wing Man Sum, Yee Mei Kwan, Feifei Zhou, Huaiqing Meng, Lorna Kwai Ping Suen
BACKGROUND: People with diabetes are at a higher risk of influenza infections and severe complications. The vaccination of close contacts could offer indirect protection to people with diabetes; this is known as "herd immunity." The aim of this study is to investigate the vaccination rates of people with diabetes and their household contacts in Hong Kong. RESEARCH DESIGN AND METHODS: Face-to-face interviews with 158 patients diagnosed with Type 2 diabetes and aged ⩾65years were conducted in clinics...
January 13, 2017: Vaccine
https://www.readbyqxmd.com/read/28065476/back-to-the-future-immunization-with-m-001-prior-to-trivalent-influenza-vaccine-in-2011-12-enhanced-protective-immune-responses-against-2014-15-epidemic-strain
#3
George H Lowell, Sagit Ziv, Svetlana Bruzil, Ron Babecoff, Tamar Ben-Yedidia
We previously reported a 2011/12 study in elderly showing that immunization with the universal influenza vaccine candidate, M-001, three weeks before administering trivalent influenza vaccine (TIV) enhanced seroconversion of Hemagglutination Inhibition (HAI) antibodies against known influenza vaccine strains circulating at that time. We now report that those subjects primed with M-001 prior to TIV in 2011 also showed, in their 2011 sera, significantly more HAI antibodies with improved seroprotection and seroconversion against strain A/Switzerland/9715293/2013(H3N2-like) that caused the 2014/15 influenza epidemic and that wasn't known to circulate in 2011/12...
January 5, 2017: Vaccine
https://www.readbyqxmd.com/read/28062184/c-jun-n-terminal-kinase-activity-is-required-for-efficient-respiratory-syncytial-virus-production
#4
Leon Caly, Hong-Mei Li, Marie A Bogoyevitch, David A Jans
Respiratory syncytial virus (RSV) is a major cause of respiratory infections in infants and the elderly, leading to more deaths than influenza each year worldwide. With no RSV antiviral or efficacious vaccine currently available, improved understanding of the host-RSV interaction is urgently required. Here we examine the contribution to RSV infection of the host stress-regulated c-Jun N-terminal kinase (JNK), for the first time. Peak JNK1/2 phosphoactivation is observed at ∼24 h post-infection, correlating with the time of virus assembly...
January 3, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28054599/estimating-risks-of-inapparent-avian-exposure-for-human-infection-avian-influenza-virus-a-h7n9-in-zhejiang-province-china
#5
Erjia Ge, Renjie Zhang, Dengkui Li, Xiaolin Wei, Xiaomeng Wang, Poh-Chin Lai
Inapparent avian exposure was suspected for the sporadic infection of avian influenza A(H7N9) occurring in China. This type of exposure is usually unnoticed and difficult to model and measure. Infected poultry with avian influenza H7N9 virus typically remains asymptomatic, which may facilitate infection through inapparent poultry/bird exposure, especially in a country with widespread practice of backyard poultry. The present study proposed a novel approach that integrated ecological and case-control methods to quantify the risk of inapparent avian exposure on human H7N9 infection...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28049046/the-business-cycle-and-mortality-urban-versus-rural-counties
#6
Sediq Sameem, Kevin Sylwester
Many studies have found that mortality declines during recessions, but do such results remain consistent in both urban and rural settings? To help uncover explanations for such a pro-cyclical nature of mortality, the present study revisits this topic but allows for associations between unemployment and mortality to differ between urban and rural areas. Using a total of 66 863 observations across 3066 counties of the U.S. from 1990 to 2013, we allow the coefficient on unemployment to differ between urban and rural counties...
December 23, 2016: Social Science & Medicine
https://www.readbyqxmd.com/read/28043227/influenza-epidemiology-in-patients-admitted-to-sentinel-australian-hospitals-in-2015-the-influenza-complications-alert-network
#7
Allen C Cheng, Mark Holmes, Dominic E Dwyer, Louis B Irving, Tony M Korman, Sanjaya Senenayake, Kristine K Macartney, Christopher C Blyth, Simon Brown, Grant Waterer, Robert Hewer, N Deborah Friedman, Peter A Wark, Graham Simpson, John Upham, Simon D Bowler, Albert Lessing, Tom Kotsimbos, Paul M Kelly
The Influenza Complications Alert Network (FluCAN) is a sentinel hospital-based surveillance program that operates at sites in all states and territories in Australia. This report summarises the epidemiology of hospitalisations with laboratory-confirmed influenza during the 2015 influenza season. In this observational study, cases were defined as patients admitted to one of the sentinel hospitals with an acute respiratory illness with influenza confirmed by nucleic acid detection. During the period 1 April to 30 October 2015 (the 2015 influenza season), 2,070 patients were admitted with confirmed influenza to one of 17 FluCAN sentinel hospitals...
December 24, 2016: Communicable Diseases Intelligence Quarterly Report
https://www.readbyqxmd.com/read/28031209/factors-associated-with-influenza-vaccination-coverage-among-the-elderly-in-south-korea-the-fourth-korean-national-health-and-nutrition-examination-survey-knhanes-iv
#8
David Soonil Kwon, Kyuwoong Kim, Sang Min Park
OBJECTIVE: The annual outbreak of influenza is one of the major causes of morbidity and mortality among the elderly population around the world. While there is an annual vaccine available to prevent or reduce the incidence of disease, not all older people in Korea choose to be vaccinated. There have been few previous studies to examine the factors influencing influenza vaccination in Korea. Thus, this study identifies nationwide factors that affect influenza vaccination rates in elderly Koreans...
December 28, 2016: BMJ Open
https://www.readbyqxmd.com/read/28024956/effectiveness-of-mf59-adjuvanted-seasonal-influenza-vaccine-in-the-elderly-a-systematic-review-and-meta-analysis
#9
REVIEW
Alexander Domnich, Lucia Arata, Daniela Amicizia, Joan Puig-Barberà, Roberto Gasparini, Donatella Panatto
BACKGROUND: In the elderly, traditional influenza inactivated vaccines are often only modestly immunogenic, owing to immunosenescence. Given that adjuvantation is a means of enhancing the immune response, the trivalent inactivated vaccine adjuvanted with MF59 (MF59-TIV) was specifically designed to overcome this problem. Considering that, for ethical reasons, the absolute effectiveness of an influenza vaccine in the elderly cannot be demonstrated in placebo-controlled studies, the present study aimed to assess the effectiveness of MF59-TIV in preventing influenza-related outcomes in the elderly...
December 23, 2016: Vaccine
https://www.readbyqxmd.com/read/27960210/community-acquired-pneumonia-in-latin-america
#10
Hernán A Iannella, Carlos M Luna
Community-acquired pneumonia (CAP) is associated with significant morbidity and mortality in Latin America and the Caribbean (LAC) region. Poverty, socioeconomic factors, and malnutrition influence the incidence and outcome of CAP in LAC. In LAC, Streptococcus pneumoniae is the most frequent microorganism responsible for CAP, (incidence: 24-78%); the incidence of atypical microorganisms is similar to other regions of the world. Human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) is a growing problem in the LAC region, with the Caribbean being the second most affected area worldwide after Sub-Saharan Africa...
December 2016: Seminars in Respiratory and Critical Care Medicine
https://www.readbyqxmd.com/read/27943624/temporal-cross-correlation-between-influenza-like-illnesses-and-invasive-pneumococcal-disease-in-the-netherlands
#11
Wilke Hendriks, Hendriek Boshuizen, Arnold Dekkers, Mirjam Knol, Ge A Donker, Arie van der Ende, Hester Korthals Altes
BACKGROUND: While the burden of community-acquired pneumonia and invasive pneumococcal disease (IPD) is still considerable, there is little insight in the factors contributing to disease. Previous research on the lagged relationship between respiratory viruses and pneumococcal disease incidence is inconclusive, and studies correcting for temporal autocorrelation are lacking. OBJECTIVES: To investigate the temporal relation between influenza-like illnesses (ILI) and IPD, correcting for temporal autocorrelation...
December 10, 2016: Influenza and Other Respiratory Viruses
https://www.readbyqxmd.com/read/27943329/viral-pathogens-among-elderly-people-with-acute-respiratory-infections-in-shanghai-china-preliminary-results-from-a-laboratory-based-surveillance-2012-2015
#12
Chuchu Ye, Weiping Zhu, Jianxing Yu, Zhongjie Li, Yifei Fu, Yajia Lan, Shengjie Lai, Yuanping Wang, Lifeng Pan, Qiao Sun, Genming Zhao
Acute respiratory infections (ARIs), with viral pathogens as the major contributors, are the most common illnesses worldwide, and increase the morbidity and mortality among the elderly population. The clinical and pathological features of elderly people with ARIs need to be identified for disease intervention. From January 1(st) , 2012 through December 31(st) , 2015, respiratory specimens from patients above 60 years old with ARIs were collected from the outpatient and inpatient settings of six sentinel hospitals in Pudong New Area...
December 12, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27943165/assessment-of-public-health-and-economic-impact-of-intranasal-live-attenuated-influenza-vaccination-of-children-in-france-using-a-dynamic-transmission-model
#13
L Gerlier, M Lamotte, S Grenèche, X Lenne, F Carrat, C Weil-Olivier, O Damm, M Schwehm, M Eichner
OBJECTIVES: We estimated the epidemiological and economic impact of extending the French influenza vaccination programme from at-risk/elderly (≥65 years) only to healthy children (2-17 years). METHODS: A deterministic, age-structured, dynamic transmission model was used to simulate the transmission of influenza in the French population, using the current vaccination coverage with trivalent inactivated vaccine (TIV) in at-risk/elderly individuals (current strategy) or gradually extending the vaccination to healthy children (aged 2-17 years) with intranasal, quadrivalent live-attenuated influenza vaccine (QLAIV) from current uptake up to 50% (evaluated strategy)...
December 9, 2016: Applied Health Economics and Health Policy
https://www.readbyqxmd.com/read/27939013/do-antibody-responses-to-the-influenza-vaccine-persist-year-round-in-the-elderly-a-systematic-review-and-meta-analysis
#14
REVIEW
Barnaby Young, Xiahong Zhao, Alex R Cook, Christopher M Parry, Annelies Wilder-Smith, Mark Chen I-Cheng
INTRODUCTION: The influenza vaccine is less immunogenic in older than younger adults, and the duration of protection is unclear. Determining if protection persists beyond a typical seasonal epidemic is important for climates where influenza virus activity is year-round. METHODS: A systematic review protocol was developed and registered with PROSPERO [CRD42015023847]. Electronic databases were searched systematically for studies reporting haemagglutination-inhibition (HI) titres 180-360days following vaccination with inactivated trivalent seasonal influenza vaccine, in adults aged ⩾65years...
January 5, 2017: Vaccine
https://www.readbyqxmd.com/read/27928779/how-antibiotics-should-be-prescribed-to-hospitalized-elderly-patients-with-community-acquired-pneumonia
#15
Forest W Arnold
Elderly patients hospitalized with community-acquired pneumonia (CAP) should be administered antimicrobials in the emergency department prior to transfer to the ward or intensive care unit (ICU). For ward patients, a β-lactam with a macrolide or a respiratory fluoroquinolone alone should be given to cover typical and atypical pathogens. For ICU patients, a β-lactam with either a macrolide or a fluoroquinolone should be given. Other regimens are indicated if methicillin-resistant Staphylococcus aureus or Pseudomonas aeruginosa is a concern...
January 2017: Drugs & Aging
https://www.readbyqxmd.com/read/27927253/factors-associated-with-influenza-vaccine-uptake-in-older-adults-living-in-the-community-in-singapore
#16
L W Ang, J Cutter, L James, K T Goh
In Singapore, influenza vaccination is recommended for persons at higher risk of complications of seasonal influenza, including those with chronic medical conditions and the elderly (individuals aged ⩾65 years). We investigated the factors associated with influenza vaccine uptake based on a nationally representative sample of community-dwelling adults aged >50 years. The data for this study were obtained from the National Health Surveillance Survey (NHSS) 2013. The association between influenza vaccine uptake and socio-demographic and health-related variables was analysed using univariable and multivariable logistic regression models...
December 8, 2016: Epidemiology and Infection
https://www.readbyqxmd.com/read/27925855/costs-associated-with-influenza-related-hospitalization-in-the-elderly
#17
Núria Torner, Encarna Navas, Núria Soldevila, Diana Toledo, Gemma Navarro, Aurea Morillo, Maria José Pérez, Angela Domínguez
Seasonal influenza epidemics remain a considerable burden in adults, especially in those at higher risk of complications. The aim of this study was to determine the costs associated with influenza-related hospitalization in patients aged ≥65 y admitted to 20 hospitals from 7 Spanish regions during the 2013-14 and 2014-15 influenza seasons. Bivariate analysis was used to compare costs in vaccinated and unvaccinated cases. Costs were calculated according to the Spanish National Health System diagnosis-related group tables for influenza and other respiratory system conditions (GRD 89 and GRD 101)...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27924681/factors-associated-with-30-day-mortality-in-elderly-inpatients-with-community-acquired-pneumonia-during-2-influenza-seasons
#18
Núria Torner, Conchita Izquierdo, Núria Soldevila, Diana Toledo, Judith Chamorro, Elena Espejo, Amelia Fernández-Sierra, Angela Domínguez
Community-acquired pneumonia (CAP) refers to pneumonia unrelated to hospitals or extended-care facilities. The aim of this study was to determine factors associated with 30-day mortality in patients with CAP aged ≥ 65 y admitted to 20 hospitals in 7 Spanish regions during the 2013-14 and 2014-15 influenza seasons. Logistic regression was used to identify factors associated with 30-day mortality. The adjusted model included variables selected by backward elimination with a cut off of < 0.02. A total of 1928 CAP cases were recorded; 60...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27910810/production-of-tnf-alpha-ex-vivo-is-predictive-of-an-immune-response-to-flu-vaccination-in-a-frail-elderly-population
#19
Frédéric Bloch, Bénédicte Charmeteau, Michael Tovey, Jean-François Meritet, Corinne Desaint, Odile Launay, Pierre Lebon
OBJECTIVE: To investigate the relationship between the response to influenza vaccination and the ability to produce proinflamatory cytokines in elderly subjects. METHODS: Whole blood samples from 25 elderly subjects collected before influenza vaccination were stimulated with the influenza vaccine in order to evaluate the secretion of five specific cytokines: TNFα, IFNα, IFNγ, IL2 and IL10. The results were correlated with the increased HAI antibody titres two weeks after vaccination...
September 1, 2016: European Cytokine Network
https://www.readbyqxmd.com/read/27893998/influenza-and-rhinovirus-viral-load-and-disease-severity-in-upper-respiratory-tract-infections
#20
Andrea Granados, Adriana Peci, Allison McGeer, Jonathan B Gubbay
BACKGROUND: The role of viral load in respiratory viral infection is unclear. It is proposed that the viral load of some, but not all respiratory viruses correlate with disease severity. OBJECTIVES: We aimed to determine if an association exists between viral loads among patients in ambulatory settings, compared to those requiring hospitalization/intensive care unit (ICU) admission with influenza A/H3N2, influenza B, or human rhinovirus (HRV); we also explored the impact of age, gender and co-detection of Streptococcus pneumoniae on patient setting...
January 2017: Journal of Clinical Virology: the Official Publication of the Pan American Society for Clinical Virology
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