Seasonal influenza vaccination is the most important way of preventing seasonal influenza virus infections and potentially severe complications, including death. Seasonal influenza vaccination reduces the likelihood of becoming ill with influenza or transmitting influenza to others.•Seasonal influenza vaccines do not contain the 2009 H1N1 strain and are not expected to provide significant cross-protection against pandemic (H1N1) 2009 influenza.² Influenza A (H1N1) 2009 monovalent vaccines to prevent the 2009 H1N1 virus have been licensed; initial doses of licensed vaccine are expected to be available by mid-October 2009.•Two types of seasonal influenza vaccine are licensed by the Food and Drug Administration (FDA) for use in the United States: trivalent influenza vaccine (TIV) and live, attenuated influenza vaccine (LAIV).•TIV is injected into the muscle of the upper arm or thigh. It can be used for people 6 months of age or older, including those with chronic medical conditions, pregnant ...
Background: Following the emergence of the 2009 pandemic influenza A(H1N1) virus, monovalent influenza vaccines were developed and marketed in Europe. Within the Influenza Monitoring Vaccine Effectiveness in Europe (I-MOVE) project, we estimated the pandemic influenza vaccines effectiveness (PIVE) using sentinel general practitioners (GP) influenza surveillance networks in seven European countries.. Methods: We conducted a multicentre case-control study between November 2009 and March 2010. Using systematic sampling, GPs swabbed patients presenting with influenza-like illness (ILI European Union case definition) within eight days of symptom onset and collected their vaccination history and a list of potential confounders (e.g. age group, chronic diseases and related hospitalisations, seasonal influenza vaccination). Cases were ILI patients with laboratory-confirmed pandemic influenza. Controls were ILI patients testing negative for influenza. Vaccination was defined as having received one dose ...
The development of broadly reactive influenza vaccines raises the need to identify the most appropriate immunoassays that can be used for the evaluation of so-called "universal" influenza vaccines, and to explore a path towards the standardisation of such assays. To address this critical topic, a workshop on "Immunoassay standardisation for universal influenza vaccines" was co-organised in June 2015 by the EDUFLUVAC consortium, a European Union funded project coordinated by the European Vaccine Initiative, and the National Institutes of Health / National Institute of Allergy and Infectious Diseases, USA. The workshop agenda encompassed a wide range of immunoassays that can be used to assess immune responses to broadly reactive influenza vaccines, from classical serological assays to assays measuring cell mediated immunity. The workshop audience agreed that it was not possible to establish one universal immunoassay for universal influenza vaccine(s) because the approaches towards these vaccines ...
Treatment of seasonal influenza is dominated by two categories of treatment options, vaccines and antiviral therapies. In the recent years it was observed that demand for seasonal influenza vaccines have increased due to changed perception of patient population. The patient population is of the opinion that preventive healthcare is better compared to curative healthcare; this led to increased demand of vaccines in Asia-Pacific region. Asia-Pacific (APAC) region is an attractive market for seasonal influenza vaccine manufacturers. Major drivers in the market is increasing awareness, increasing vaccination coverage in the APAC countries and rising government support for immunization against seasonal influenza. Major restraints of the market are variable demand and limited production capacity. Traditional egg based manufacturing of seasonal influenza vaccines is being replaced with cell culture vaccines. Cell culture based production of vaccines is expected to reduce the problems associated with ...
In June 2006, the Advisory Committee on Immunization Practices (ACIP) expanded its 2004 recommendation for routine influenza vaccination of children aged 6--23 months to include children aged 24--59 months. The 2006 ACIP recommendations also reemphasized that previously unvaccinated children aged ,9 years should receive 2 doses of influenza vaccine administered at least 1 month apart to be fully vaccinated (1). In 2007, using data from six immunization information system (IIS)* sentinel sites, CDC conducted the first assessment of influenza vaccination coverage among children aged 6--59 months during the 2006--07 influenza season. The findings demonstrated that, at all six sites, ,30% of children aged 6--23 months and ,20% of children aged 24--59 months were fully vaccinated. Vaccination coverage data from national and state surveys for an influenza season generally are not available until the next influenza season. Rapid assessment of influenza vaccination coverage can help direct activities of ...
Results: The overall sample consisted of 4,011 people. The influenza vaccination coverage rate in Germany increased from 22.3% in 2002/2003 to 25.1% in 2003/2004. This increase is not significant. The most frequent reasons for being vaccinated given by vaccinees were: influenza considered to be a serious illness, which people wanted to avoid (90.1%), having received advice from the family doctor or nurse to be vaccinated (71.3%), and not wanting to infect family and friends (70.4%). Reasons for not being vaccinated mentioned by people who have never been vaccinated were: thinking about it, however, not being vaccinated in the end (47.7%), not expecting to catch influenza (43.6%), and not having received a recommendation from the family doctor to be vaccinated (36.6%). Options encouraging influenza vaccination are: recommendation by the family doctor or nurse (66.6%), more available information on the vaccine regarding efficacy and tolerance (54.2%), and more information available about the ...
INTRODUCTION: Seasonal (inactivated) influenza vaccination is recommended for all individuals aged 65+ and in individuals under 65 who are at an increased risk of complications of influenza infection, for example, people with asthma. Live attenuated influenza vaccine (LAIV) was recommended for children as they are thought to be responsible for much of the transmission of influenza to the populations at risk of serious complications from influenza. A phased roll-out of the LAIV pilot programme began in 2013/2014. There is limited evidence for vaccine effectiveness (VE) in the populations targeted for influenza vaccination. The aim of this study is to examine the safety and effectiveness of the live attenuated seasonal influenza vaccine programme in children and the inactivated seasonal influenza vaccination programme among different age and at-risk groups of people. METHODS AND ANALYSIS: Test negative and cohort study designs will be used to estimate VE. A primary care database covering 1.25 ...
The early onset of the 2012-13 influenza season offered an opportunity to provide an early VE estimate. Overall, the estimate suggests that the 2012-13 influenza vaccine has moderate effectiveness against circulating influenza viruses, similar to a summary VE estimate from a meta-analysis of randomized controlled clinical trial data (2). Influenza vaccination, even with moderate effectiveness, has been shown to reduce illness, antibiotic use, doctor visits, time lost from work, hospitalizations, and deaths (6). Results for the 2012-13 season indicate that vaccination has reduced the risk for influenza-associated medical visits by approximately 60%, demonstrating the benefits of influenza vaccination during the current season. Influenza activity is likely to continue for several more weeks in the United States. As always, vaccination efforts should continue as long as influenza viruses are circulating. Persons aged ≥6 months who have not yet received the 2012-13 influenza vaccine should be ...
The report firstly introduced Influenza Vaccine (Split Virion),Inactivated basic information included Influenza Vaccine (Split Virion),Inactivated definition classification application industry chain structure industry overview; international market analysis, China domestic market analysis, Macroeconomic environment and economic situation analysis and influence, Influenza Vaccine (Split Virion),Inactivated industry policy and plan, Influenza Vaccine (Split Virion),Inactivated product specification, manufacturing process, product cost structure etc. then statistics Global and China key manufacturers Influenza Vaccine (Split Virion),Inactivated capacity production cost price profit production value gross margin etc details information, at the same time, statistics these manufacturers Influenza Vaccine (Split Virion),Inactivated products customers application capacity market position company contact information etc company related information, then collect all these manufacturers data and listed ...
5 Countries of Europe Collectively Control more than 80 percent in the Europe Influenza Vaccine Market. Influenza virus is mostly activated in the winter season every year in the European region. Vaccination is the best way to prevent from Influenza virus. It is anticipated that Influenza vaccine market is near to US$ 1 Billion due to a large target population, strong public healthcare infrastructure, high per capita healthcare spending and influenza vaccination program in European countries. Our research report title "Europe Influenza Vaccine Market, Vaccinated Population (23 Countries Market Data) By (Child & Adult) & Forecast" cover the following points:. • Influenza vaccinated population (Children and Adult vaccinated population). • Influenza vaccinated market (Children and Adult vaccinated market). • Influenza Vaccine Covered (Vaxigrip/Fluzone, Fluarix/ Flulaval, FluMist/Fluenz, Afluria/Fluvax and Fluvirin/Flucelvax, Anflu). • 23 Countries Covered (Netherlands, Denmark, Estonia, ...
Global Influenza Vaccine Market is worth more than US$ 5 Billion. Globally Pediatrics Influenza Vaccinated Population was more than 150 Thousand, but still this figure was significantly less than the Adult Influenza Vaccinated Population. As per our research Pediatrics Influenza Vaccinated population will decline in future and Adult Influenza Vaccinated Population will increase in forecast period.. Get Free 10% Customization in this Report. United States has the highest market share in Influenza Vaccine Market. United States Influenza Vaccine Market Share was almost 4 times more than China and Japan Influenza Vaccine Market Share. United States & China together captures close to 60 percent in Pediatrics Influenza Vaccine Market Share. Whereas, in adult vaccination segments, United States and Japan will share more than 50 percent market share by 2022. Download Full Report: ...
Global Influenza Vaccine Market is worth more than US$ 5 Billion. Globally Pediatrics Influenza Vaccinated Population was more than 150 Thousand, but still this figure was significantly less than the Adult Influenza Vaccinated Population. As per our research Pediatrics Influenza Vaccinated population will decline in future and Adult Influenza Vaccinated Population will increase in forecast period.. Get Free 10% Customization in this Report. United States has the highest market share in Influenza Vaccine Market. United States Influenza Vaccine Market Share was almost 4 times more than China and Japan Influenza Vaccine Market Share. United States & China together captures close to 60 percent in Pediatrics Influenza Vaccine Market Share. Whereas, in adult vaccination segments, United States and Japan will share more than 50 percent market share by 2022. Download Full Report: ...
Global Influenza Vaccine Market is worth more than US$ 5 Billion. Globally Pediatrics Influenza Vaccinated Population was more than 150 Thousand, but still this figure was significantly less than the Adult Influenza Vaccinated Population. As per our research Pediatrics Influenza Vaccinated population will decline in future and Adult Influenza Vaccinated Population will increase in forecast period.. Get Free 10% Customization in this Report. United States has the highest market share in Influenza Vaccine Market. United States Influenza Vaccine Market Share was almost 4 times more than China and Japan Influenza Vaccine Market Share. United States & China together captures close to 60 percent in Pediatrics Influenza Vaccine Market Share. Whereas, in adult vaccination segments, United States and Japan will share more than 50 percent market share by 2022. Download Full Report: ...
The present phase III study aims to evaluate the safety and immunogenicity of MF59-adjuvanted subunit seasonal influenza vaccine and to evaluate the consistency in the manufacturing process of three consecutive lots of MF59-adjuvanted subunit seasonal influenza vaccine with respect to immunogenicity in subjects aged 65 years and older. The active comparator non-adjuvanted seasonal influenza vaccine is approved for use in this age group in the United States and will be used to provide a comparative assessment for immunogenicity and safety ...
To determine the effect of HIV-infection, tuberculosis (TB) and HIV-TB co-infection on humoral antibody responses, measured by hemagglutinin inhibition assay (HAI), to each of three strains included in the seasonal non-adjuvanted trivalent influenza vaccine In this study we will use the following definitions to assess the humoral immune response to TIV: HAI titers ,1:10 = seronegative; HAI titers ≥1:10 = seropositive; HAI titers ≥1:40 = sero-protective; sero-response rate (primary outcome measure) will be defined as a titer of ≥1:40 in an individual with baseline titers of ,1:10, or ,4-fold increase of HAI titers if baseline titers were ≥1:10. Hemagglutination inhibition assays will be performed on serum as per recommended methods. Sera will be titrated against antigens from the influenza vaccine strains included in the 2013 seasonal TIV ...
Latest industry research report on Influenza Vaccines Market. Influenza is a type of seasonal or pandemic condition causing fever, coryza, cough, headache, and malaise. The severity of influenza symptoms varies across age groups and type of influenza. According to the World Health Organization (WHO), approximately, 3 to 5 million people are prone to seasonal epidemics, annually.. The growing number of ageing population and an increase in the frequency of seasonal influenza outbreak supplement the demand for influenza vaccines across the healthcare industry. Intellectual property rights are providing security to the patent holders, thereby, increases their market share. However, the upcoming patent expirations for top influenza vaccines and the growing popularity of influenza drugs as over the counter (OTC) products would provide an opportunity for generic manufacturers.. Get Free Sample Report Of Influenza Vaccines Market @ ...
Vaccination against influenza is considered the most important public health intervention to prevent unnecessary hospitalizations and premature deaths related to influenza in the elderly, though there are significant inequities among global influenza vaccine resources, capacities, and policies. The objective of this study was to assess the social determinants of health preventing adults ≥65 years old from accessing and accepting seasonal influenza vaccination. A systematic search was performed in January 2011 using MEDLINE, ISI - Web of Science, PsycINFO, and CINAHL (1980-2011). Reference lists of articles were also examined. Selection criteria included qualitative and quantitative studies written in English that examined social determinants of and barriers against seasonal influenza vaccination among adults≥65 years. Two authors performed the quality assessment and data extraction. Thematic analysis was the main approach for joint synthesis, using identification and juxtaposition of themes
We used a mathematical model with two circulating influenza strains to evaluate the effect of modified pH1N1 infection risk following receipt of seasonal influenza vaccine on optimal seasonal vaccination strategies in the Canadian population. Our projections suggest that, in the presence of the best currently available information on the epidemiology of pH1N1 in Canada, the decisions by several jurisdictional health authorities to restrict or delay the use of seasonal vaccines until after the likely peak of the autumn pandemic wave represents a reasonable choice under uncertainty. Specifically, in the presence of low levels of co-circulating seasonal influenza strains, even a relatively small enhancement of risk associated with vaccination has a negative impact on total influenza-attributable mortality if the entire population is immunized at usual vaccination coverage. At higher levels of co-circulating seasonal influenza, the impact of this enhanced risk is less marked, as seasonal vaccine has ...
Health care providers should not use live attenuated influenza vaccine (LAIV) in the upcoming 2016-17 season due to poor effectiveness, a Centers for Disease Control and Prevention (CDC) committee said Wednesday.. Academy leaders say they support the interim recommendation by the CDCs Advisory Committee on Immunization Practices (ACIP).. "We agree with ACIPs decision today to recommend health care providers and parents use only the inactivated vaccine for this influenza season," said AAP President Benard Dreyer, M.D., FAAP.. The AAP recommends children ages 6 months and older be immunized against influenza every year. Previously, the CDC and AAP had recommended either form of flu vaccine - the inactivated influenza vaccine (IIV) that is given by injection and is approved for all patients older than 6 months, or LAIV which is given by intranasal spray and is approved for healthy patients ages 2 through 49 years.. However, new data presented to the ACIP showed that currently only IIV provides ...
Influenza virus infection is an ongoing health and economic burden causing epidemics with pandemic potential, affecting 5-30% of the global population annually, and is responsible for millions of hospitalizations and thousands of deaths each year. Annual influenza vaccination is the primary prophylactic countermeasure aimed at limiting influenza burden. However, the effectiveness of current influenza vaccines are limited because they only confer protective immunity when there is antigenic similarity between the selected vaccine strains and circulating influenza isolates. The major targets of the antibody response against influenza virus are the surface glycoprotein antigens hemagglutinin (HA) and neuraminidase (NA). Hypervariability of the amino acid sequences encoding HA and NA is largely responsible for epidemic and pandemic influenza outbreaks, and are the consequence of antigenic drift or shift, respectively. For this reason, if an antigenic mismatch exists between the current vaccine and
... An independent analysis by the internationally renowned Cochrane Collaboration of worldwide influenza vaccine studies, published in the British Medical Journal on Oct. 28, concluded there is little scientific proof that inactivated influenza vaccine is safe and effective for children and adults. Citing the Cochrane Collaboration finding as well as methodological flaws in a child influenza vaccine study published Oct. 25 in the Journal of the American Medical Association (JAMA), the National Vaccine Information Center is calling on the Centers for Disease Control (CDC) to stop recommending annual flu shots for all infants and children until methodologically sound studies are conducted.. "There is a big gap between policies promoting annual influenza vaccinations for most children and adults and supporting scientific evidence," said epidemiologist Tom Jefferson, Cochrane Vaccines Field, Rome, Italy, ...
Influenza, however, is unique among respiratory viral pathogens in that another effective intervention to prevent transmission exists: vaccination. Annual influenza vaccination has been available in the United States since 1945 and has been recommended for persons at high risk of influenza complications since 1960. Unlike many pathogens, the predominant circulating influenza strains vary from year to year, affecting the intensity and severity of the influenza season as well as vaccine effectiveness. According to a recent systematic review and meta-analysis of influenza vaccine protection, there was 59% effectiveness of the trivalent influenza vaccine in adults aged 18 to 65 years and a higher effectiveness (83%) of the live-attenuated vaccine (LAIV) in children.3Although not at levels of other vaccines, influenza vaccination provides some protection and may prevent complications due to influenza such as pneumonia, hospitalizations, and death. Recent studies in children have demonstrated that the ...
According to recent research published in the Pediatrics journal, patients should not use the nasal spray flu vaccine in 2016. This statement supports previous recommendations from the Advisory Committee on Immunization Practices (ACIP) of the Centers for Disease Control and Prevention (CDC),. These recommendations are based on research which reveals that the nasal spray flu vaccine, also known as the live attenuated influenza vaccine (LAIV), offered low protection against certain types of influenza between 2013 and 2016 and does not offer the required efficacy.. The data gathered from the United States Influenza Vaccine Effectiveness Network showed that LAIV offered only 3% protection against any flu virus during the 2015-2016 flu season in children aged 2 to 17 years. By comparison, the inactivated influenza vaccine (IIV), the injectable flu vaccine, proved more effective, offering 63 percent protection against any influenza strain.. MedImmunes LAIV, FluMist was also found to offer poor or ...
Live attenuated influenza vaccine (LAIV) offers the promise of inducing a variety of immune responses thereby conferring protection to circulating field strains. LAIVs are based on cold adapted and temperature sensitive phenotypes of master donor viruses (MDVs) containing the surface glycoprotein genes of seasonal influenza strains. Two types of MDV lineages have been described, the Ann Arbor lineages and the A/Leningrad/17 and B/USSR/60 lineages. Here the safety and immunogenicity of a Madin Darby Canine Kidney - cell culture based, intranasal LAW derived from A/Leningrad/17 and B/USSR, was evaluated in healthy influenza non-naive volunteers 18-50 years of age. In a double-blind, randomized, placebo-controlled design, single escalating doses of 1 x 10(5),1 x 10(6), or 1 x 10(7) tissue culture infectious dose 50% (TCID50) of vaccine containing each of the three influenza virus re-assortants recommended by the World Health Organization for the 2008-2009 season were administered intranasally. A ...
BACKGROUND: The objective of this study was to assess the predictive effects of socioeconomic factors to explain influenza vaccination coverage rates in 11 European countries. METHODS: Data from national household surveys collected over up to seven consecutive seasons between 2001/2002 and 2007/2008 were analyzed to assess the associations of socioeconomic factors with immunization against influenza. RESULTS: In total, data from 92,101 household contacts representative for the national non-institutionalized population aged above 14 years were analyzed. Influenza vaccination coverage rates in Europe remain suboptimal with little or no progress in the last years. The results of this study indicate that gender, household income, size of household, educational level and population size of living residence may significantly contribute to explain chances of getting immunized against influenza apart from the known risk factors age and chronic illness. The effect of these socioeconomic factors was ...
Observations on Vaccine Production Technologies and Factors Potentially Influencing Pandemic Influenza Vaccine Choices in Developing Countries A discussion paper World Health Organization SoulMiitAtiaR* WestwnhcMc~ � SEA-TRH-006 Distribution: Limited Observations on Vaccine Production Technologies and Factors Potentially Influencing Pandemic Influenza vaccine Choices in Developing Countries A discussion paper World Health Organization Regional Office for South-East Asia �@ World Health Organization 2009 This document is not issued to the general public, and all rights are reserved by the World Health Organization (WHO). The document may not be reviewed, abstracted, quoted, reproduced or translated, in part or in whole, without the prior written permission of WHO. No part of this document may be stored in a retrieval system or transmitted in any form or by any means - electronic, mechanical or other - without the prior written permission of WHO. The views expressed in documents by named ...
Duration of Serum Antibody Response to Seasonal Influenza Vaccines: Summary. The level of antibody response made to seasonal influenza vaccines depends on the vaccine preparation, dose, prior antigenic experience, and age or underlying disease conditions of an individual Slideshow 158272 by...
The report aims to provide a critical review of evidence on the barriers and drivers of seasonal influenza vaccination coverage in the EU/EEA. The report focuses on high-risk groups where high coverage of seasonal flu vaccination is most important. The 2009 Council of the European Union Recommendation on seasonal influenza vaccination encourages countries to implement measures that would increase seasonal influenza vaccination uptake to at least 75% for defined older age groups, and, if possible, for other risk groups. In support of this, the ECDC report summarises the evidence on what are the barriers and what are the drivers for seasonal influenza vaccination by each risk group ...
The report aims to provide a critical review of evidence on the barriers and drivers of seasonal influenza vaccination coverage in the EU/EEA. The report focuses on high-risk groups where high coverage of seasonal flu vaccination is most important. The 2009 Council of the European Union Recommendation on seasonal influenza vaccination encourages countries to implement measures that would increase seasonal influenza vaccination uptake to at least 75% for defined older age groups, and, if possible, for other risk groups. In support of this, the ECDC report summarises the evidence on what are the barriers and what are the drivers for seasonal influenza vaccination by each risk group ...
This approval represents a technological advance in the manufacturing of an influenza vaccine," stated Karen Midthun, director of the FDAs Center for Biologics Evaluation and Research. "The new technology offers the potential for faster startup of the vaccine manufacturing process in the event of a pandemic, because it is not dependent on an egg supply or on availability of the influenza virus.". Unlike current flu vaccines, Flublok does not use the influenza virus or eggs in its production. Flubloks novel manufacturing technology allows for production of large quantities of the influenza virus protein, hemagglutinin - the active ingredient in all inactivated influenza vaccines that is essential for entry of the virus into cells in the body. The majority of antibodies that prevent influenza virus infection are directed against HA. While the technology is new to flu vaccine production, it is used to make vaccines that have been approved by the FDA to prevent other infectious ...
Posts about Seasonal Influenza Vaccine Uptake in Frontline Healthcare workers HCWs Survey 2013‐2014 written by Dementia and Elderly Care News
The influenza A virus was isolated for the first time in 1931, and the first attempts to develop a vaccine against the virus began soon afterwards. In addition to causing seasonal epidemics, influenza viruses can cause pandemics at random intervals, which are very hard to predict. Vaccination is the most effective way of preventing the spread of influenza infection. However, seasonal vaccination is ineffective against pandemic influenza viruses because of antigenic differences, and it takes approximately six months from isolation of a new virus to develop an effective vaccine. One of the possible ways to fight the emergence of pandemics may be by using a new type of vaccine, with a long and broad spectrum of action. The extracellular domain of the M2 protein (M2e) of influenza A virus is a conservative region, and an attractive target for a universal influenza vaccine. This review gives a historical overview of the study of M2 protein, and summarizes the latest developments in the preparation of M2e
Increasing seasonal influenza vaccination uptake among these groups is a key strategy to reduce the burden of influenza in the European Region. WHO/Europe is therefore developing a guide, called "TIP FLU" (Tailoring immunization programmes for influenza), to assist national immunization programmes in designing targeted strategies to increase uptake among specific priority groups. WHO/Europe also monitors seasonal influenza vaccination coverage and policies in the Region, in order to provide technical assistance to Member States that are expanding their seasonal influenza vaccination programmes. ...
Background. A new trivalent inactivated split-virus influenza vaccine (TIV) was recently introduced in the United States. We assessed the efficacy of TIV against culture-confirmed influenza A and/or B. Methods. In this double-blind trial conducted from September 2006 to May 2007 in the Czech Republic and Finland, participants aged 18-64 years were randomized to receive 1 dose of TIV (n = 5103) or placebo (n = 2549). Influenza-like illnesses (ILI) (defined as at least 1 systemic symptom [fever {oral temperature, ⩾37.8°C} and/or myalgia] and at least 1 respiratory symptom [cough and/or sore throat]) were identified by both active (biweekly phone contact) and passive surveillance. Nasal and throat swab specimens were collected for viral culture. Results. The attack rate for culture-confirmed ILI was 3.2% in the placebo group, with most strains identified as influenza A (all except 1 were H3N2) matching the vaccine strain. There were 6 cases of influenza B, all of which were of a different ...
Background Existing methods to measure influenza vaccine immunogenicity prohibit detailed analysis of epitope determinants recognized by immunoglobulins. The development of highly multiplex proteomics platforms capable of capturing a high level of antibody binding information will enable researchers and clinicians to generate rapid and meaningful readouts of influenza-specific antibody reactivity. Methods We developed influenza hemagglutinin (HA) whole-protein and peptide microarrays and validated that the arrays allow detection of specific antibody reactivity across a broad dynamic range using commercially available antibodies targeted to linear and conformational HA epitopes. We derived serum from blood draws taken from 76 young and elderly subjects immediately before and 28±7 days post-vaccination with the 2008/2009 trivalent influenza vaccine and determined the antibody reactivity of these sera to influenza array antigens. Results Using linear regression and correcting for multiple hypothesis
SOURCE: Medscape Medical News. By Larry Hand. October 25, 2011 - Critical gaps exist in the evidence for the effectiveness of licensed influenza vaccines in the United States, researchers report in an article published online October 25 in The Lancet Infectious Diseases. Individuals who are at risk for medical complications or people who are aged 65 years or older are especially affected by the gaps, the researchers write.. The researchers conducted a meta-analysis of 31 studies that used laboratory tests to confirm influenza infections. These studies were selected from 5707 studies identified, published over a period of 40 years. The authors found that trivalent inactivated vaccine, which is used for 90% of influenza vaccinations in the United States, is only effective in preventing infection in 59% of healthy adults. They also found live attenuated influenza vaccine, which is not approved for adults who are aged 50 years or older, to be effective in 83% of children aged 7 years or younger, and ...
Introduction Following the 2009 influenza A/H1N1 (pH1N1) pandemic, both seasonal and pH1N1 viruses circulated in the US during the 2010-2011 influenza season; influenza vaccine effectiveness (VE) may vary between live attenuated (LAIV) and trivalent inactivated (TIV) vaccines as well as by virus subtype. Materials and Methods Vaccine type and virus subtype-specific VE were determined for US military active component personnel for the period of September 1, 2010 through April 30, 2011. Laboratory-confirmed influenza-related medical encounters were compared to matched individuals with a non-respiratory illness (healthy controls), and unmatched individuals who experienced a non-influenza respiratory illness (test-negative controls). Odds ratios (OR) and VE estimates were calculated overall, by vaccine type and influenza subtype. Results A total of 603 influenza cases were identified. Overall VE was relatively low and similar regardless of whether healthy controls (VE = 26%, 95% CI: −1 to 45) or test
The proposed agreement is intended to provide a supply of 200 million doses and an option to purchase additional 100 million doses, with deliveries starting by the end of 2020, subject to regulatory approval The vaccine supply for the EU would be produced by BioNTechs manufacturing sites in Germany and Pfizers manufacturing site in Belgium Pfizer and BioNTech are on track to seek regulatory review of BNT162b2 as early as October 2020 and, if regulatory authorization or approval is obtained, currently plan to supply up to 100 million doses worldwide by the end of 2020 and approximately 1.3 billion doses by the end of 2021 Pfizer (NYSE: PFE) and BioNTech SE (Nasdaq: BNTX) today announced that they had concluded exploratory talks with the European Commission for a proposed supply of 200 million doses of their investigational BNT162 mRNA-based vaccine candidate against SARS-CoV-2 to European Union (EU) Member States, with an option for further 100 million doses. Deliveries would be
Immunological memory operates on the assumption that if youre exposed to an infection once, youre more likely to be exposed again. Chance favors the prepared, and the memory response is bigger, faster, and stronger. Now, Herati et al. examine immunological memory in humans who have received successive annual influenza vaccinations. They find that circulating T follicular helper cells, which provide B cell help, not only respond to influenza vaccination but also form long-lasting memory. These cells may serve as markers for successful vaccination as well as targets for new vaccines. ...
We used SMS to collect information on post-influenza vaccination events in a sample of pregnant and non-pregnant women, and found no evidence that pregnant women are more likely to experience a reaction following administration of the 2014 influenza vaccination when compared to non-pregnant, female HCWs of similar age. Using active surveillance, we found that 1-in-10 pregnant women experienced some sort of reaction, but fewer than 2% developed a fever. These results were similar for non-pregnant, female HCWs, although this group reported slightly higher rates of fever and headache. The most common side-effect reported by either group was a local reaction at the injection site, occurring in about one of every 15-20 women vaccinated. This information is useful in reassuring pregnant women and antenatal immunisation providers regarding the reactogencity of seasonal influenza vaccination during pregnancy. However, because the antigenic characteristics of the influenza vaccine can change from year to ...
Here at Columbia University Medical Center, all employees and students may receive, at no charge, influenza vaccine every year. I just went to the lobby of the Milstein Hospital, showed my ID, and received the seasonal influenza vaccine. Here is the proof: As Ive written before, vaccine records provide interesting inf
To combat an unexpected shortage of influenza vaccine in the fall of 2004, CDC issued guidance to direct available vaccine supplies to persons in designated priority groups (e.g., persons aged 65 years [and older], persons with certain health conditions, healthcare workers, and close contacts of persons at high risk for complications from influenza). Analyses of influenza vaccination coverage for the 2004-05 influenza season indicated that coverage levels for adults in priority groups nearly reached the levels of previous years, whereas coverage levels among adults not in priority groups were approximately half the levels of the 2003-04 season. These findings suggested that national public health actions to direct available vaccine supply to persons at high risk for complications from influenza during the supply disruption were successful. To assess influenza vaccination coverage among persons aged 50-64 years for the 2004-05 influenza season relative to the 2003-04 season and to estimate the ...
Flu Vaccine Not Effective In Preventing H1N1. Research studies have shown for three years that the flu vaccine is not effective in preventing H1N1 has been widely reported, including a study by the Center for Disease Control (CDC).. In Nov. 13, 2009, the Center for Disease Control and Prevention published a case-cohort study on the effectiveness of 2008-09 trivalent influenza vaccine against 2009 pandemic H1N1, concluding there was no decreased or increased risk of pandemic H1N1 following seasonal flu vaccine for people vaccinated. (CDC. Effectiveness of 2008-09 Trivalent Influenza Vaccine Against 2009 Pandemic Influenza A (H1N1)-United States, May-June 2009. MMWR Nov. 13, 2009; 58 (44):1241-5.). Between April 21 and May 8, a total of 97 military family patients developed H1N1. Of these, 63, or 66 percent, had received the flu vaccine in the previous 12 months. "In comparison, only 40 percent of patients without H1N1 virus had no history of vaccination," reported Barbara Loe Fisher at the ...
The CDC recommends that people get an influenza vaccine by the end of October, if possible; however, the vaccination should continue to be offered throughout the influenza season, even into January or later. It takes approximately two weeks after vaccination for influenza antibodies to develop. Due to the low effectiveness of the quadrivalent live attenuated influenza vaccine (LAIV4) in the U.S. during the 2013-14 and 2015-16 seasons, the ACIP made a temporary recommendation that LAIV4 (FluMist) should not be used in the 2016-17 season; it later extended this advisement for the 2017-18 season. Recommendations for individuals with egg allergy have been modified and now indicate that those with a history of egg allergy who have experienced only hives after egg exposure can receive any age-appropriate inactivated influenza vaccine or recombinant influenza vaccine, excluding LAIV4. Additionally, pregnant women are also able to receive any licensed, recommended, age-appropriate influenza vaccine ...
At this time of the year we are getting ready to protect our patients from influenza. Vaccination is an important step in prevention. Some of the vaccines are made with egg and this presents a potential challenge with the egg-allergic child. The live-attenuated influenza vaccine (LAIV) and the inactivated influenza vaccine (IIV)- have a listed […]. ...
The most serious side effect that can occur after influenza vaccination is an allergic reaction in people who have a severe allergy to eggs. For this reason, children who have an allergy to eggs should not receive the influenza vaccine. According to the National Center for Infectious Diseases, part of the CDC, the influenza vaccine causes no side effects in most children who are not allergic to eggs.. Less than one-third of people who receive the vaccine experience some soreness at the vaccination site, and about 5 to 10 percent experience mild side effects, such as a headache or a low-grade fever for about a day after vaccination. Because these mild side effects mimic some influenza symptoms, some people believe influenza vaccine causes them to get influenza. However, according to the CDC, "influenza vaccine produced in the United States has never been capable of causing influenza because the only type of influenza vaccine that has been licensed in the United States to the present time is made ...
Children under 6 months of age should NOT be given the seasonal flu vaccine, nor should children with allergies to chicken eggs. If your child has a chronic health condition, talk to the doctor before getting your child vaccinated. How is the Vaccine Given?. The seasonal flu vaccine is administered via injection or a nasal spray. The injected vaccine contains an inactive virus for the body to build antibodies against, while the nasal spray is made with a weakened live virus.. The nasal spray (also called Live Attenuated Influenza Vaccine or LAIV, or FluMist) is approved for healthy people aged 2 through 49, but not pregnant women. The injected vaccine is approved for those 6 months or older, whether healthy or having certain chronic medical conditions.. According to the CDC, children aged 2 through 9, will need two doses of the flu vaccine the first time they receive it. The first dose "primes" the immune system, while the second dose administered 28 days or more after the first, provides the ...
This represents a change in the influenza A (H1N1) component compared with the composition of the 2016-2017 influenza vaccine," the CDC explains. "The vaccine viruses recommended for inclusion in the 2017-2018 Northern Hemisphere influenza vaccines are the same vaccine viruses that were chosen for inclusion in 2017 Southern Hemisphere seasonal flu vaccines. These vaccine recommendations were based on several factors, including global influenza virologic and epidemiologic surveillance, genetic characterization, antigenic characterization, antiviral resistance, and the candidate vaccine viruses that are available for production ...
Routine annual vaccination against influenza A and B viruses is recommended for everyone ≥6 months old without a specific contraindication.1. EFFECTIVENESS - The effectiveness of seasonal influenza vaccine in preventing laboratory-confirmed influenza illness depends on the match between the vaccine and circulating strains. Vaccine effectiveness is highest (40-60%) when the match is close, but even when the match is poor, vaccination has been shown to reduce the risk of hospitalization and death from influenza.2-4 For the 2016-2017 influenza season, the adjusted overall effectiveness of the seasonal influenza vaccine against influenza A and B viruses was 42%.5. COMPOSITION - All seasonal influenza vaccines available in the US contain the same two influenza A virus ... more ...
In this large population-based study, influenza vaccination in people with type 2 diabetes was associated with reductions in rates of hospital admission for acute cardiovascular and respiratory diseases, and in all-cause mortality across 7 influenza seasons. Additional adjustment for residual confounding did not qualitatively alter the results of the conventional analyses but attenuated the associations for acute MI, pneumonia or influenza and death, and strengthened the associations for stroke and heart failure. Influenza vaccination was associated with lower rates of admission to hospital for acute MI, but this association was not statistically significant.. Current policy in many countries strongly emphasizes annual vaccination for older adults and patients with chronic conditions, such as diabetes. However, there is no conclusive clinical trial evidence to support the benefits of influenza vaccination in these groups.25 Epidemiologic studies quantifying influenza vaccine protection against ...