Flu vaccine effectiveness statistics. Series: ACIP meeting Influenza.

Flu vaccine effectiveness statistics. 2023-2024 Pfizer-BioNTech COVID-19 vaccine.
Mar 10, 2022 · The vaccine was only about 16 percent effective at reducing a person’s chance of getting a mild or moderate infection, the agency said. How effective was the 2021-2022 flu vaccine? Preliminary end-of-season vaccine effectiveness estimates showed that flu vaccines reduced people’s risk of mild to moderate flu illness caused by flu A(H3N2)–the most Feb 29, 2024 · Busting myths you may have heard about the flu and cold 02:14. The flu vaccine has been proven to be effective in children ages 2–17. The protection provided by a flu vaccine varies from season to season and depends in part on the age and health status of the person getting the vaccine and the similarity or “match” between the viruses in the vaccine and those in circulation. 3,4,5,6 According to the interim analysis in Europe from September 2023 to January 2024, VE against influenza A/H1N1pdm09 was reported to be 40–59%, while the estimates against Aug 31, 2020 · A flu vaccine is one of the easiest and most effective ways to prevent the flu. Feb 8, 2021 · Flu vaccine effectiveness can change from year to year. Feb 25, 2024 · The Flu Vaccine: Get the Facts. Feb 22, 2023 · This is the first time that estimates of flu vaccine effectiveness against more severe outcomes have been available this early and from three different VE networks, which is a result of the early flu activity seen this season. Learn the truth about common myths and how the flu shot can help protect More than 11,000 previously unvaccinated young men/trainees received bivalent vaccine including influenza virus types A and B. 14 A United States (US) Centers for Disease Control and Prevention (CDC) analysis from 2010 estimated that influenza-associated deaths among all age May 5, 2023 · In primary care, emergency and hospital settings, interim influenza vaccine effectiveness estimations for 2022/23 indicated some protection by the vaccine. 1% in the placebo group (69% efficacy). com Feb 17, 2022 · This can result in a change in flu vaccine effectiveness from year to year. Mar 24, 2023 · Influenza vaccine effectiveness (VE) varies by age, influenza season, and influenza virus type/subtype. Although people with the flu are most contagious in the first 3-4 days after their illness begins, some otherwise healthy adults may be able to infect others beginning 1 day before symptoms develop and up to 5 to 7 days after becoming sick. At the time of writing this article, the 2020–2021 flu season is underway. Results: There were 20,477 influenza cases recruited across the six studies, of which 16,589 (81%) were influenza A. You may be able to pass on the flu to someone else before you know you are sick, as well as while you are sick. AimTo provide interim 2022/23 influenza vaccine effectiveness (VE) estimates from six European studies, cover … See full list on verywellhealth. “It’s become normalized, become a Jun 5, 2018 · The first Cochrane review looked at the effects of the influenza vaccine in healthy adults from 25 studies conducted over single influenza seasons in North America, South America, and Europe Aug 10, 2017 · The A(H1N1)pdm09 virus strain used in the live attenuated influenza vaccine was changed for the 2015–2016 influenza season because of its lack of effectiveness in young children in 2013–2014. Across all age groups including children, the flu vaccine prevented between 15 to 52% of flu cases between 2015 - 2020 For the breakdowns of each year, please consult Public Health England's data on the effectiveness of flu vaccines in the 2015-16 season, 2016-17 season, 2017-18 season, 2018-19 season and 2019-20 season. Vaccine for older adults gives significant Feb 29, 2024 · The vaccine effectiveness in children against influenza A H1N1 viruses — the type that has predominated this flu season — ranged from 54% to 61% against flu infection requiring medical care Apr 4, 2015 · On Feb. … Sep 13, 2022 · During seasons when flu vaccine viruses are similar to circulating flu viruses, flu vaccine has been shown to reduce the risk of having to go to the doctor with flu by 40% to 60%. 9%, according to findings from the Serious Outcomes Surveillance Network of the Canadian Immunization Research May 30, 2023 · Yes, for some people. Most influenza vaccines are produced using embryonated hen’s eggs. Influenza (flu) vaccine effectiveness (VE) can vary. This season was characterised by an earlier start of the seasonal epidemic and an earlier peak in positivity compared to the four previous seasons. The announcement was made at an information session after a 4-day meeting on the Composition of Influenza Virus Vaccines. There is also a live nasal flu vaccine available which is available for children over 2 years of age. Feb 24, 2022 · Vaccines have greatly reduced the burden of many infectious diseases. Series: ACIP meeting Influenza. 21–0. Who should have the flu vaccine. 10, 11 It is plausible that the careful use of social distancing, face covering, and handwashing used These estimates could be influenced by differences in underlying health status between the vaccinated and unvaccinated groups. 56 (95% CrI 0. 5, 2015, other Canadian researchers published interim estimates of 2014/15 influenza vaccine effectiveness in preventing laboratory-confirmed influenza-related hospitalization. Sep 14, 2023 · Systematic monitoring of influenza and COVID-19 vaccine effectiveness (VE), as is conducted through the Pan American Health Organization’s Network for the Evaluation of Vaccine Effectiveness in Latin America and the Caribbean–influenza (la Red para la Evaluación de Vacunas en Latino América y el Caribe—influenza [REVELAC–i]) † can Prevention and Control of Seasonal Influenza with Vaccines: Recommendations of the Advisory Committee on Immunization Practices — United States, 2023-2024 Influenza Season has been published. 7 In comparing the effectiveness of vaccines against virus A flu vaccine is the first and best way to reduce your chances of getting the flu and spreading it to others. This season's influenza vaccines have been 42% effective so far, according to a new interim estimate from the Centers for Disease Feb 21, 2020 · During the 2019-20 influenza season, influenza-like illness (ILI)* activity first exceeded the national baseline during the week ending November 9, 2019, signaling the earliest start to the influenza season since the 2009 influenza A(H1N1) pandemic. Clin Infect Dis 2020: ciaa706. 1 A variety of observational study designs have been used to monitor vaccine effectiveness (VE). 23 December 2021. Feb 26, 2020 · According to a Feb. The figure for people aged 65 and over was −32. 20, 2023 – For those who have gotten the flu shot this season, there's good news: This year’s formulation looks like it will be very effective at preventing severe cases and hospitalization. These are Fluzone High-Dose Quadrivalent vaccine Flublok Quadrivalent recombinant Influenza vaccinea nd Fluad Quadrivalent adjuvanted influenza vaccine. Trivalent flu vaccines are formulated to protect against three flu viruses (an A(H1N1) virus, an A(H3N2) virus, and a B/Victoria virus). Nov 6, 2023 · For the 2023-24 UK flu season, three different types of inactivated flu vaccines are available, with an extra version that has an added ‘adjuvant’ to make the vaccine more effective in older people. Sep 2, 2020 · 1. Feb 23, 2023 · Data from the CDC suggest 2022-2023 flu shots have been effective across age groups, preventing severe disease and hospitalizations. Evidence for protection in adults aged 65 years or older is lacking. Given the higher risk of severe flu illness and lower protective immune response after vaccination among older adults, substantial research and development have produced new flu vaccines intended to provide better protection Remember that flu vaccine not only protects you, but it also can help protect those around you. Mar 14, 2024 · All flu vaccines for the 2024-2025 season are anticipated to be trivalent in the United States. 7%, which was 1. Nov 1, 2021 · Updated flu vaccine uptake in GP patients data for 1 September 2021 to 30 November 2021: region and STP. Feb 23, 2024 · Flu vaccine coverage for all adults is about 47%, which is similar to coverage among adults at the end of last season (2022-2023). This means 30-60% of those vaccinated are less likely to become seriously ill or die from influenza. The annual mortality rate of influenza was estimated by the Global Pandemic Mortality Project II using data between 2002 and 2011. was during the 2020-2021 flu season, when end-of-season estimates were that 50% of the adult population had gotten a flu vaccine. Aug 15, 2019 · After the 2009 pandemic, several U. During recent seasons, Influenza vaccine efficacy, effectiveness and impact explained. Thank you for visiting nature. Mar 22, 2024 · For people younger than 65 years, CDC does not preferentially recommend any licensed, age-appropriate influenza (flu) vaccine over another. Using data from four vaccine effectiveness (VE) networks during the 2023-24 influenza season, interim influenza VE was estimated among patients aged ≥6 months with acute respiratory illness-associated m … Aug 4, 2017 · Despite these challenges, estimates of the burden of disease among the elderly are important for developing effective influenza vaccination strategies, preventive measures and clinical treatments. Added November 2021 reports. Results There were 20,477 influenza cases recruited across the six studies, of which 16,589 (81%) were influenza A. Apr 4, 2024 · Compared with other studies estimating VE of seasonal influenza in the post-COVID-19 pandemic era, the VE (22. Influenza is a respiratory disease resulting from infection with the influenza virus. Feb 5, 2021 · Kim SS, Flannery B, Foppa IM, et al. Among 6260 participants, 468 (7%) tested positive for influenza only, including 440 (94%) for A(H3N2). It is more prevalent during cold periods, with the peak of infections between November and April in the Northern Hemisphere and between June and October in the Southern Hemisphere. Jan 10, 2022 · The Centers for Disease Control and Prevention note that recent studies have pegged the flu vaccine effective rate at between 40% and 60% in most years. Among all ages and settings, VE against influenza A ranged from 27 to 44%. 74) for During the 2022 influenza season, influenza vaccination reduced the odds of hospitalization among those vaccinated by one-third. Mar 3, 2022 · This influenza VE estimate is the first since the 2019–20 season; effectiveness of 2020–21 influenza vaccines could not be assessed because influenza virus circulation was historically low. What you should know about this data. 41–0. Personal Author: Chung, Jessie R. No, the flu vaccine can't give you the flu. 3. Flu vaccine supply depends on private manufacturers who produce the vaccine. Cumulative rates of laboratory-confirmed influenza hospitalizations so far this season have also been substantially lower than in recent A(H3N2 BackgroundInfluenza A(H1N1)pdm09, A(H3N2) and B viruses were co-circulating in Europe between September 2019 and January 2020. These data underscore that flu vaccination can offer substantial benefit against flu and its potentially serious Feb 2, 2023 · Effectiveness of influenza vaccine varies by season, influenza virus subtype, and antigenic match with circulating viruses. Introduction. Although randomized trials are required to evaluate a new vaccine, once that vaccine is approved and licensed it will be subject to postmarketing surveillance using observational studies. Jun 16, 2023 · Influenza (flu) vaccine effectiveness (VE) can vary. Data is split to show effectiveness of the flu vaccine in children aged 2 to 17 years. Can I get the flu vaccine if I have a latex allergy? Influenza vaccines used in Australia do not contain latex. /urgent care visits (moderate disease) by 48 percent and Jul 18, 2018 · Influenza vaccine effectiveness in adults and children in primary care in the UK: provisional end of season results 2017 to 2018 Ref: PHE publications gateway number 2018267 PDF , 155 KB , 1 page Apr 10, 2022 · Estimates of flu vaccine effectiveness is 40-60% in the United States and 30-60% in Australia. But you might develop flu-like symptoms — despite getting a flu vaccine — for many reasons, including: Reaction to the vaccine. For most people, neither type is recommended over the other. LAIVs consistently show highest efficacy in young children (aged 6 months to 7 years). , a measure of how well the flu vaccine protects). The cost-effectiveness model predicted that the use of QIVs in the elderly population in Malaysia would prevent 19,235 cases of influenza that required Jun 5, 2024 · Of the 1,015 influenza hospital admissions reported up to week 14 2022, 46 were influenza A(H1N1)pdm09, 269 were influenza A(H3N2), 635 were influenza A(not subtyped) and 65 were influenza B . FLU VACCINE REDUCES YOUR RISK OF FLU. We acknowledge that the National Centre for Immunisation Research and Surveillance (NCIRS) is on the land of the traditional owners the Aboriginal and Torres Strait Islander peoples, the First Australians, and recognise their culture, history, diversity and their deep connection to the land. CDC conducts studies each flu season to help determine how well flu vaccines are working. For the 2023-24 season, as of March 9, 2024, 157. Adjusted VE against influenza A(H3N2)-associated hospitalization was 49%. 8% among children 6 months through 17 years, a decrease of 0. Oct 31, 2023 · Base case analysis Health-related outcome. 3 They made these estimates using data from routine surveillance metrics for the flu, along with the number of excess deaths that occurred during flu seasons and mortality records where deceased people had respiratory symptoms. The meeting is held twice annually, once for the southern and once for the northern Oct 26, 2011 · Influenza vaccines can provide moderate protection against virologically confirmed influenza, but such protection is greatly reduced or absent in some seasons. 8 percentage points from the prior season. Jun 27, 2024 · Updated 2024-2025 Flu Vaccine Recommendation. 72 million doses of flu vaccine have been distributed in the United States. During the worldwide Spanish flu pandemic of 1918, "Pharmacists tried everything they knew, everything they had ever heard of, from the ancient art of bleeding patients, to administering oxygen, to developing new vaccines and serums (chiefly against what we now call Hemophilus influenzae – a name derived from the fact that it was originally considered the etiological agent – and several The ambition for flu vaccine coverage is to reach or exceed 75% uptake for people aged 65 years and over, as recommended by the World Health Organization (WHO). In those aged 65 years and over, uptake was: Effective plans for delivering the 2020 to 2021 Vaccine effectiveness studies can: Be used to determine if people at increased risk of severe flu illness (often excluded from clinical trials/RCTs) respond differently to vaccination. Dec 1, 2023 · The CDC predicts influenza vaccine effectiveness based on circulating flu serotypes at the time the vaccine is manufactured. Influenza Vaccine Effectiveness Network, United States, October 4, 2021–February 12 Influenza vaccination of elderly persons living in the community is associated with reduced hospitalizations from complications from influenza, with fewer deaths during the influenza season, and with direct health care cost savings. It's offered on the NHS every year in autumn or early winter. 2023-2024 Pfizer-BioNTech COVID-19 vaccine. Apr 16, 2020 · 1. 5%) in our study was estimated to be somewhat lower. 33 (95% credible interval [CrI] 0. AimTo provide interim 2019/20 influenza vaccine effectiveness (VE) estimates from six European studies, covering 10 countries and both primary care and hospital settings. All 206 sequenced A(H3N2) viruses were characterized as belonging to genetic group 3C. Influenza D viruses primarily affect cattle and are not known to infect or cause illness in people. The composition of U. There are three influenza vaccines that are preferentially recommended for people 65 years and older. These vaccine effectiveness (VE) studies help regularly assess the value of flu vaccination as a public health intervention. Between 2010 and 2020, it estimates that the flu has resulted in 9 to 41 million illnesses, 140,000 to 710,000 hospitalizations Mar 10, 2022 · Number and percentage of persons receiving 2021–22 seasonal influenza vaccine among 3,636 outpatients with acute respiratory infection, by influenza test result status and vaccine effectiveness* against all influenza A and against virus type A(H3N2) — U. 8 percentage points from the 2020–21 flu season, and flu vaccination coverage among adults ≥18 years was 49. In general, cell-based vaccines have a similar effectiveness to standard (egg-based) flu vaccines. A medical worker gives an elderly woman an influenza Jan 4, 2023 · Bar graph displaying flu vaccine effectiveness as a percentage for each year from 2015-2016. English. While epidemiological evidence of effectiveness usually requires the gathering of data at the end of season, surveillance of circulating viruses Mar 22, 2024 · These results are consistent with the general range of estimated flu vaccine effectiveness among adults 18-64 years. June 22, 2022. Sep 22, 2022 · Flu vaccine effectiveness can also vary depending on the age and health status of the person being vaccinated. In the coming months, scientists will begin to get estimates of Flucelvax Quad is the only cell-based flu vaccine currently used in Australia. Corporate Authors: Aug 24, 2021 · npj Vaccines - Relative effectiveness of influenza vaccines in elderly persons in the United States, 2012/2013-2017/2018 seasons. e. Since a protective effect of vaccination should be specific to influenza season, evaluation of non-influenza periods could indicate the possible contribution of bias to the estimates observed during influenza season. This interim report used data from two concurrent studies conducted at Marshfield Clinic Health System (MCHS) in Wisconsin during October 23, 2022–February 10, 2023, to estimate influenza vaccine effectiveness (VE). By Chung, Jessie R. March 9, 2024, was the final update for doses distributed. A few things are different for the 2022-2023 influenza (flu) season, including: The composition of flu vaccines has been updated. Jan 22, 2024 · Flu vaccine has a clear advantage, thanks to the fact it’s been around for eons. Feb 2, 2018 · Adjusted standard dose inactivated influenza vaccine effectiveness (VE) by influenza type and subtype. Skip to main content. VE was estimated by Overall and influenza (sub)typespecific VE was estimated for each study using logistic regression adjusted for potential confounders. Nov 3, 2022 · Get the facts on the safety and effectiveness of the flu shot with this helpful guide from the experts at Cleveland Clinic. Feb 22, 2024 · The benefits of vaccination with any flu vaccine, including egg-based flu vaccine, still far outweigh the potential risks of not getting vaccinated. Feb 28, 2023 · Early reports find that the flu vaccine was 54% effective for adults under the age of 65 and 71% effective at providing protection for children and adolescents under the age of 18. Methods: We used a linked database of healthcare administrative claims data and vaccination records maintained by the municipality of a city in Kanto region of Japan. The flu vaccine also doesn't increase your risk of COVID-19. com. 21 <i>Morbidity and Mortality Weekly Report</i> from the CDC, the current influenza vaccine has been 45% effective overall against 2019-2020 seasonal influenza A and B viruses. Rochelle Walensky said at a news briefing Monday. 2 Annual vaccination is the most effective strategy for preventing influenza and reducing these burdens, as it has been shown to reduce the risk of influenza illness among the general population by 40%‐60% when Preliminary estimates of 2021–22 seasonal influenza vaccine effectiveness against medically attended influenza for the US Flu VE Network. During each influenza season since 2004–05, CDC has estimated the effectiveness of seasonal influenza vaccine to prevent laboratory-confirmed influenza associated with medically attended acute respiratory illness (ARI). 1 percentage points lower than coverage in the 2019–20 season (63. Some people have muscle aches and a fever for a day or two after receiving a flu vaccine. Jul 7, 2023 · The 2022/2023 influenza season marked the return of influenza virus activity at almost pre-pandemic levels in the EU/EEA countries. Meth … Oct 28, 2022 · The cumulative incidence of influenza-attributable pneumonia and influenza (P&I) hospitalizations was 5. Starting with the 2023-2024 influenza season, the percentage of deaths with influenza listed on the death certificate will be displayed in FluView. May 30, 2019 · Flu vaccine effectiveness data shows newly available adjuvanted influenza vaccine provided about 60% effectiveness for those aged 65 years and over. 2021–22 Influenza season † 2022–23 Influenza season Characteristic: Number (weighted %) Weighted % vaccinated (95% CI) Number (weighted %) Weighted % vaccinated (95% CI) Jan 12, 2023 · Flu vaccine manufacturers did not report any significant delays in national flu vaccine supply or distribution during 2020-2021. Randomized trials remain the gold standard for licensure, but observational studies are needed for annual assessment of vaccine effectiveness (VE). Lower immune responses may lead to lower vaccine effectiveness (i. 6%, which was 5. Oct 1, 2020 · Results. You are Mar 1, 2024 · The influenza vaccines being used this flu season are 41% to 44% effective in preventing flu-related hospitalization in adults and 52% to 61% effective for children, according to estimates in the Jun 5, 2024 · Everything you need to know about flu viruses and flu illness, including symptoms, treatment and prevention. 4 million illnesses, 58,000 hospitalizations, and 3,500 deaths associated with influenza. Experts said a good rate would be at least 50 percent. Sialic acid receptors on the surface of human and avian cells are the binding sites for influenza virus. 2 percentage points higher than coverage in the 2018–19 season (62. 2 billion. Oct 7, 2021 · Results. 0% and 27. Jul 14, 2022 · These reports summarise the surveillance of influenza, COVID-19 and other seasonal respiratory illnesses. The effectiveness of the influenza vaccine is likely to vary from season to season because the vaccine viruses may not completely match the circulating influenza viruses that are infecting people. 0% more effective in Sep 8, 2023 · Scientists collected preliminary flu vaccine effectiveness (VE) data from the REVELAC-i network from five South American countries (Argentina, Brazil, Chile, Paraguay, and Uruguay) during March 27-July 9, 2023. flu vaccines is reviewed annually by the U. 1 Among diseases targeted by vaccines recommended before 1980, 3—polio, measles, and rubella—have achieved elimination status as Dec 13, 2023 · In this analysis, which looked at more than 100,000 acute respiratory illness-related health care encounters between October 2022 and March 2023, flu vaccination reduced the risk of influenza A-associated hospitalizations by 35% and ED/UC visits by 44%, with vaccine effectiveness varying by age group and care setting as follows: Jun 22, 2017 · Circulation of predominantly influenza A subtype H3N2 viruses that were antigenically mismatched to the vaccine strain in 2014–2015 resulted in an estimated seasonal vaccine effectiveness of 27 Feb 29, 2024 · The California Department of Public Health (CDPH) used these data sources to estimate early influenza season vaccine effectiveness (VE) against laboratory-confirmed influenza during October 2023–January 2024, including by age and influenza type. Oct 25, 2021 · When were the first flu vaccine uptake estimates provided the 2020-2021 season? CDC launched the first weekly FluVaxView dashboard in December. Each year, infection with influenza causes an estimated 9. May 6, 2022 · Side effects are usually mild and go away in a few days. In the United States, annual influenza vaccination is recommended for all persons aged ≥6 months. During the 2018-2019 influenza season, influenza vaccination prevented an estimated 4. 3 million to 45 million illnesses in the United States 1 and an associated average cost of $11. 7%; Figure 1). Oct 11, 2018 · Nonetheless, while vaccine effectiveness can vary from season to season, vaccination reduces the overall risks of influenza – both for the vaccinated individual and those in contact with them. REVELAC-i used a test Table 1. Details: Alternative Title: Vaccine effectiveness update. For example, older adults may have a weaker immune response to the H3N2 component of Sep 29, 2020 · The following statistics demonstrate the flu vaccine uptake rates by cohort over recent years. Aug 4, 2023 · 1. 2 days ago · Flu vaccine effectiveness: 2022-2023 flu season for ages 6 months to 17 years. Despite the majority of the adults (67%) agreeing that it is safe to get the flu vaccine and a COVID-19 vaccine at the same time; more than a quarter of the adult population (26%) thought that the flu vaccine or a COVID-19 vaccine could be less effective if getting them together. In many vaccine effectiveness studies, estimates are presented of the reduction in risk of medically-attended influenza virus infection among people who have been vaccinated versus The 2023 flu vaccine reduced the risk of influenza-related hospitalizations by about 52% in the Southern Hemisphere, where the flu season typically spans March through September, according to data from 2780 patients who were hospitalized with severe acute respiratory infections in 5 countries. BackgroundBetween October 2022 and January 2023, influenza A(H1N1)pdm09, A(H3N2) and B/Victoria viruses circulated in Europe with different influenza (sub)types dominating in different areas. Influenza C virus is detected less frequently and usually causes mild infections, thus does not present public health importance. In adults age 65 and older, flu vaccine effectiveness declines, but the risk of complications from influenza still makes older adults a priority group for vaccination. Sep 21, 2022 · Influenza vaccine effectiveness estimates are estimates of the reduction in risk of influenza conferred by influenza vaccination and inform individuals and public health agencies about the benefits of vaccination. Jun 29, 2023 · Updated Flu Vaccine for 2023-2024 Flu viruses are constantly changing. Jul 18, 2018 · Public Health England (PHE) has today (Wednesday, 18 July 2018) published data on the effectiveness of the flu vaccine in the 2017 to 2018 season. Food and Drug Administration Vaccines and Related Biological Products Advisory Committee and updated as needed to best match the flu viruses research indicates will be most common during the upcoming season. May 1, 2024 · These vaccines have U. Activity remains elevated as of mid-February 2020. The data show that overall, flu vaccine was 15% Access influenza vaccination coverage data here. Aug 22, 2022 · Childhood vaccination has dramatically reduced morbidity, mortality, and disability caused by vaccine-preventable diseases, with ∼21 million hospitalizations, 732 000 deaths, and 322 million cases of disease averted in the United States between 1994 and 2013. VE was estimated by flu virus subtype and by selected populations (young children, older adults, and people with underlying medical Mar 22, 2024 · The first and most important step in preventing flu is to get a flu vaccine each year. Flu vaccine has been shown to reduce flu related illnesses and the risk of serious flu complications that can result in hospitalization or even death. Two post-licensure studies in adults aged ≥65 years found that the high-dose influenza vaccine was between 23% and 47% more effective at preventing influenza or penumonia associated mortality than standard-dose egg-based influenza vaccines. Nov 10, 2022 · Vaccinations: Influenza This publication contains information on the number of people who have had a flu vaccination since 1 August 2023, by NHS region of residence and by age-based cohorts. This interim report used data from two concurrent studies conducted at Marshfield Clinic Health System (MCHS) in Wisconsin during October 23, 2022-February 10, 2023, to estimate influenza vaccine effectiveness (VE). Food and Drug Administration (FDA) emergency use authorization or approval. Vaccination remains the most effective measure to prevent severe disease caused by influenza. . Influenza vaccine effectiveness in preventing influenza-associated intensive care admissions and attenuating Dec 5, 2023 · Flu vaccines reduced the risk of hospitalization by 37% overall, with the vaccine effectiveness estimates varying by age group and influenza virus A subtype as follows: People 18–64 years who were vaccinated were 47% less likely to be hospitalized with flu. There is emerging evidence that coinfection of influenza with coronavirus disease 2019 (COVID‐19) (the illness caused by SARS‐CoV‐2) is rare; however, individuals with both infections may be at higher risk of poor health outcomes. The flu vaccine is recommended for people at higher risk of getting seriously ill from flu. In England, between 2004-05 and 2019-20, flu vaccine uptake fluctuated between 71% and 75%. Jul 25, 2024 · Methods: Using the test-negative design, we evaluated influenza vaccine effectiveness (VE) during the 2022-2023 season against influenza A-associated emergency department/urgent care (ED/UC) visits and hospitalizations from October 2022 to March 2023 among adults (aged ≥18 years) with acute respiratory illness (ARI). You can get the free NHS flu vaccine if you: are aged 65 or over; have certain long-term health conditions; are pregnant; live in a care home Feb 29, 2024 · Abstract. Among children 6 months through 17 years, the percentage receiving ≥1 dose of flu vaccine during the 2020–21 season was 58. Side effects from the flu vaccine may include: Pain, swelling, or redness where the shot was given; Headache; Muscle aches; Fever; Upset stomach; Serious side effects from the flu vaccine are very rare. These side effects aren’t the flu — the flu vaccine can’t cause the flu. Can I get the flu from the flu vaccine? No, the flu vaccine cannot cause flu. 5%; Figure 1). Due to low levels of Jun 1, 2021 · Methods for assessing influenza vaccine efficacy and effectiveness have evolved over six decades. According to the Centers for Disease Control and Prevention (CDC), receiving the influenza vaccine is the most effective way to prevent yourself from becoming sick with the flu Feb 23, 2024 · The World Health Organization (WHO) today announced the recommendations for the viral composition of influenza vaccines for the 2024-2025 influenza season in the northern hemisphere. Feb 24, 2023 · Effectiveness of influenza vaccine varies by season, influenza virus subtype, and antigenic match with circulating viruses. The highest overall coverage among adults in the U. Aug 16, 2024 · High levels of resistance to the adamantanes (amantadine and rimantadine) persist among influenza A(H1N1)pdm09 and influenza A(H3N2) viruses (the adamantanes are not effective against influenza B viruses). studies among 2 through 17-year-olds found that the nasal spray vaccine was as effective against influenza B viruses and influenza A(H3N2) viruses as inactivated influenza vaccines but was less effective than inactivated flu vaccines against the 2009 pandemic H1N1 viruses. 18 July 2018 Research and analysis 2016 to 2017 flu season Added 'Flu vaccine for children: best practice guide for GPs' for 2023 to 2024. ; For the 2022-2023 flu season, there are three flu vaccines that are preferentially recommended for people 65 years and older. Few, if any, other preventive or therapeutic interventions for adul … Dec 27, 2023 · What’s New for 2022-2023. Medically Reviewed by Jennifer Robinson, MD on February 25, 2024. Flu vaccination uptake in children is more than 9 percentage points lower compared to coverage prior to the COVID-19 pandemic and about 3 percentage points lower compared to last season. Using data from four vaccine effectiveness (VE) networks during the 2023-24 influenza season, interim influenza VE was estimated among patients aged ≥6 months with acute respiratory illness-associated medical encounters using a test-negative case-control study design. Vaccination reduced the risk of flu-related E. 2, which has antigenic differences from the 2021–2022 season A(H3N2) vaccine component that belongs to clade 3C. Nov 20, 2023 · Nov. The number of flu vaccine doses distributed, vaccination coverage estimates for children, and vaccinations administered in retail pharmacies and doctor’s offices were updated weekly. Mar 24, 2022 · In adults and the elderly, all vaccines, except the trivalent inactivated intradermal vaccine (3-IIV ID), were more effective than placebo in reducing the risk of laboratory-confirmed influenza, with a RR between 0. CDC recommends everyone 6 months of age and older, with rare exceptions, receive an updated 2024-2025 flu vaccine to reduce the risk of influenza and its potentially serious complications this fall and winter. 2a1b subclade 2a. Download Document. D. Effects of prior season vaccination on current season vaccine effectiveness in the United States Flu Vaccine Effectiveness Network, 2012–2013 through 2017–2018. A study that expands on CDC mathematical modelling to estimate the number of additional influenza-related outcomes averted with adjuvanted versus standard influenza vaccines, found that adjuvanted trivalent influenza vaccines were more effective, preventing twice as many influenza illnesses over three seasons in adults over the age of 65 years. Feb 15, 2018 · In the United States, annual vaccination against seasonal influenza is recommended for all persons aged ≥6 months (1). To summarize Sep 22, 2023 · Each year, the CDC estimates the burden of influenza in the U. Flu vaccination has been shown in several studies to reduce severity of illness in people who get vaccinated but still get sick. Apr 4, 2023 · Results. Regardless of setting, all-age vaccine effectiveness against influenza A(H3N2) and A(H1N1)pdm09 virus subtypes ranged from 2 to 46%; this was higher for influenza B (≥ 50%). Mar 14, 2024 · Updates to U. 162,163 High-dose influenza vaccine was also found to be between 2. Feb 29, 2024 · In the United States, annual influenza vaccination is recommended for all persons aged ≥6 months. 25 November 2021. New vaccines with improved clinical efficacy and effectiveness are needed to With the exception of the 2020-21 season, when data were insufficient to generate an estimate, CDC has estimated the effectiveness of seasonal influenza vaccine at preventing laboratory-confirmed, mild/moderate (outpatient) medically attended acute respiratory infection (ARI) each season since 2004-05. Oct 17, 2013 · Influenza vaccine effectiveness: seasonal estimates. The test-negative design (TND) has become the de facto … Oct 27, 2022 · SARI sentinel data submitted to the Pan American Health Organization’s Network for the Evaluation of Vaccine Effectiveness in Latin America and the Caribbean — influenza (REVELAC-i ) were used to estimate this vaccine’s effectiveness in preventing influenza hospitalizations using previously described methods (5). Flu prevention. In December 2020, the Pfizer-BioNTech COVID-19 vaccine two-dose series was found to be both safe and effective in preventing COVID-19 infection in people age 18 and older. 1. Receipt of influenza vaccination among health care personnel by selected characteristics — Internet panel surveys*, United States, April 2022 and April 2022. Feb 1, 2021 · Influenza in the Context of the SARS‐CoV‐2 Pandemic. Determine if different flu viruses that are circulating and evolving in real-world conditions affect vaccine performance. CDC recommends that everyone 6 months of age and older receive a flu vaccine every year. 55) for trivalent inactivated high-dose (3-IIV HD) and 0. 1 per 100,000 person-years during 2022, which was higher than that during 2020-21 but lower than incidence during the 2017-19 influenza seasons. Flu VE Network site, age (by month spline), sex, race/ethnicity, high-risk health status, self-rated general health status, interval between illness onset and specimen collection, season and month of illness onset. With febrile illness as the clinical end point, the attack rate was 2. Signs and symptoms Overall and influenza (sub)type-specific VE was estimated for each study using logistic regression adjusted for potential confounders. VE has been adjusted for U. The data in this release includes all individuals with a flu vaccination administered in England, even if individuals are resident outside of England, do An RCT that compared a high-dose, inactivated influenza vaccine (containing four times the standard amount of influenza antigen) to standard dose vaccine in persons aged 65 years or older during the 2011-12 and 2012-13 influenza seasons found that rates of laboratory-confirmed influenza were 24% lower (95% CI: 10-37) among persons who received Mar 8, 2024 · Flu vaccine effectiveness against influenza B viruses was even higher, reducing a child’s risk of going to the doctor with flu by 64% – 89%. Options for this age group include inactivated influenza vaccine [IIV], recombinant influenza vaccine [RIV], or live attenuated influenza vaccine (LAIV), with no preference for any flu vaccine over another. Flu Surveillance Methods for the 2023-2024 Season. It takes about 2 weeks for it to May 5, 2023 · However, the effectiveness of influenza vaccine in the elderly has not been adequately studied, especially in terms of the duration of effectiveness. S. Children (6 months through 17 years) Among children 6 months through 17 years, the percentage receiving ≥1 dose of flu vaccine during the 2019–20 season was 63. This study’s objective was to examine the effectiveness of inactivated influenza vaccine against outpatient influenza illness in the pediatric population over 9 influenza seasons after the 2009 A(H1N1) pandemic. Jul 21, 2021 · In test-negative design studies, the confounding effects of health care–seeking behavior is reduced; however, other biases will occur. Weekly findings from community, primary care, secondary care and mortality surveillance Oct 3, 2023 · Influenza type B viruses belong to either B/Yamagata or B/Victoria lineage. Currently CDC does not have a preference for the use of any one flu vaccine over another except among people 65 years and older. A 2018 study showed that getting a flu shot reduced a pregnant person’s risk of being hospitalized with flu by an average of 40%. The flu vaccine is the most effective way to prevent the flu. This document explains 3 general terms that describe how well a vaccine works in any given influenza season: vaccine efficacy, vaccine effectiveness and vaccine impact. 4%, also a decrease of 0. [PMC free article] [Google Scholar] Dec 5, 2022 · This year’s flu shot appears to be “a very good match” to the circulating strains, US Centers for Disease Control and Prevention Director Dr. 2% in the vaccine group and 7. Health officials should encourage influenza vaccination in accordance with national recommendations. Jun 21, 2024 · Flu Vaccine Doses Distributed. INTRODUCTION. People don’t really have to devote too much brain time to a decision. Mar 21, 2024 · CDC and ACIP preferentially recommend the use of higher-dose flu vaccines (Fluzone High-Dose Quadrivalent inactivated influenza vaccine and Flublok Quadrivalent recombinant influenza vaccine) or adjuvanted flu vaccine (Fluad Quadrivalent inactivated influenza vaccine vaccine) over standard-dose unadjuvanted flu vaccines for people 65 years and Oct 18, 2022 · Vaccination coverage with ≥1 dose of flu vaccine was 57. Children (6 months through 17 years) – By Age Group. bbuhe wegdgl zpjoi zxopi xiysnl wta bmsbzmyb lnre csp rpsmb