Selecting Viruses for the Seasonal Influenza Vaccine | CDC
WEBMar 12, 2024 · Seasonal influenza (flu) vaccines are designed to protect against the four main groups of flu Type A and B viruses that research indicates are most likely to spread and cause illness among people during the upcoming flu season. All current U.S. flu vaccines protect against a flu A (H1) virus, a flu A (H3) virus, a flu B/Yamagata lineage …
Historical annual reformulations of the influenza vaccine
WEBBoth recommendations are trivalent, i.e. featuring three strains. Since the 2012–2013 season, the WHO recommendations have also included the formulation of an annual quadrivalent vaccine, featuring an additional strain of Influenza B virus.
FDA Panel Recommends 2013-2014 Flu Vaccine Strains - Medscape
WEBMar 7, 2013 · The composition of the influenza vaccine for the 2013-2014 influenza season in the United States should be slightly different from that for the 2012-2013 season, the Vaccines and...
Different Types of Flu Vaccines | CDC
WEBMar 14, 2024 · The seasonal flu vaccine protects against the influenza viruses that research suggests will be most common during the upcoming season. Below are links to more information about the different type of flu vaccines available.
Types of Influenza Viruses | CDC
WEBMar 30, 2023 · View Larger. There are four types of influenza viruses: A, B, C, and D. Influenza A and B viruses cause seasonal epidemics of disease in people (known as flu season) almost every winter in the United States. Influenza A viruses are the only influenza viruses known to cause flu pandemics (i.e., global epidemics of flu disease).
An Overview of Influenza Viruses and Vaccines - PMC
WEBSep 17, 2021 · Thus, quadrivalent influenza vaccines contain four influenza strains (two influenza A strains and two influenza B strains), and trivalent influenza vaccines contain three influenza strains (two influenza A strains and one influenza B strain).
Influenza vaccine - Wikipedia
WEBStarting with the 2012–2013 Northern Hemisphere influenza season (coincident with the approval of quadrivalent influenza vaccines), the WHO has also recommended a 2nd B-strain for use in quadrivalent vaccines.
NIH clinical trial of universal flu vaccine candidate begins
WEBSep 15, 2023 · FluMos-v2 is designed to induce antibodies against many different influenza virus strains by displaying part of the influenza virus hemagglutinin (HA) protein in repeating patterns on self-assembling nanoparticle scaffolds. Exposure to these harmless fragments of virus proteins prepares the immune system to recognize and fight the …
Influenza Vaccine Effectiveness in the United States during the …
WEBAug 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...
An overview of the regulation of influenza vaccines in the United ...
WEBMar 24, 2016 · The vaccines designed to protect against seasonal influenza illness must be updated periodically in an effort to match the vaccine strain with currently circulating viruses, and the vaccine manufacturing timeline includes multiple, overlapping processes with a very limited amount of flexibility.
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