A flu vaccine is made to protect against the flu viruses that research and surveillance indicate will likely be most common during the season. Over the course of flu season, CDC studies samples of circulating flu viruses to evaluate how close a match there is between viruses used to make the flu vaccine and circulating flu viruses.
More information about the flu season and recommended vaccines is available. No, a flu vaccine cannot cause flu illness. Flu vaccines that are given with a needle flu shots are currently made in two ways: the vaccine is made either with a flu vaccine viruses that have been killed inactivated and are therefore not infectious, or b with proteins from a flu virus which is the case for recombinant influenza vaccine. Nasal spray vaccine is made with weakened attenuated live flu viruses, and also cannot cause flu illness.
The weakened viruses are cold-adapted, which means they are designed to only reproduce at the cooler temperatures found within the nose. The viruses cannot reproduce in the lungs or other areas where warmer temperatures exist. While a flu vaccine cannot give you flu illness, there are different side effects that may be associated with getting a flu shot or a nasal spray flu vaccine. These side effects are usually mild and short-lasting, especially when compared to symptoms of flu.
A flu shot: The viruses in a flu shot are killed inactivated , so you cannot get flu from a flu shot. Some minor side effects that may occur are:. The nasal spray: The viruses in the nasal spray vaccine are weakened and do not cause severe symptoms often associated with influenza illness. In children, side effects from the nasal spray may include:. If these problems occur, they begin soon after vaccination and usually are mild and short-lived.
A flu shot, like other injections, can occasionally cause fainting. Tell your provider if you feel dizzy or have vision changes or ringing in the ears. As with any medicine, there is a very remote chance of a vaccine causing a severe allergic reaction, other serious injury, or death. People who think that they have been injured by a flu vaccine can file a claim for compensation from the National Vaccine Injury Compensation Program VICP external icon. More information about the safety of flu vaccines is available at Influenza Flu Vaccine Safety.
Flu vaccine is produced by private manufacturers, so supply depends on manufacturers. Vaccine manufacturers have projected that they will supply the United States with as many as million to million doses of influenza vaccine for the season. These projections may change as the season progresses. All flu vaccines for the season will be quadrivalent four component.
People who have a history of severe egg allergy those who have had any symptom other than hives after exposure to egg should be vaccinated in a medical setting, supervised by a health care provider who is able to recognize and manage severe allergic reactions. Two completely egg-free ovalbumin-free flu vaccine options are available: quadrivalent recombinant vaccine and quadrivalent cell-based vaccine.
To receive weekly email updates about Seasonal Flu, enter your email address:. Skip directly to site content Skip directly to page options Skip directly to A-Z link. Influenza Flu. Section Navigation. Facebook Twitter LinkedIn Syndicate. Minus Related Pages. On This Page. Quadrivalent flu vaccines include: Standard-dose quadrivalent influenza shots that are manufactured using virus grown in eggs. Different influenza shots are licensed for different age groups. These four vaccines are approved for people 6 months of age and older.
Most influenza shots are given in an arm muscle with a needle. One quadrivalent influenza shot Afluria Quadrivalent can be given either with a needle for people aged 6 months and older or with a jet injector for people aged 18 through 64 years only. A quadrivalent cell-based influenza shot Flucelvax Quadrivalent containing virus grown in cell culture, which is licensed for people 4 years and older.
This vaccine is egg-free. Recombinant quadrivalent influenza shot Flublok Quadrivalent , an egg-free vaccine, approved for people 18 years and older. A quadrivalent flu shot using an adjuvant an ingredient that helps create a stronger immune response , Fluad Quadrivalent, approved for people 65 years of age and older.
A quadrivalent high-dose influenza vaccine Fluzone High-Dose, which contains a higher dose of antigen to help create a stronger immune response, licensed for people 65 years and older.
A live attenuated influenza vaccine FluMist Quadrivalent , which is given intranasally. This vaccine is approved for people 2 through 49 years of age. The viruses included in these vaccines are inactivated so they do not cause influenza, although minor side effects may occur including local reactions at the injection site.
Persons without previous exposure to influenza vaccine antigens may experience transient fever, malaise, myalgia muscle pain and other systemic adverse events. LAIV is approved for use only in persons aged 2—49 years who do not have underlying medical conditions. The vaccine should, however, not be administered to pregnant women. LAIV is given as a nasal spray, 1 dose only; but children aged 2—8 years who have not received seasonal influenza vaccine during the previous influenza season should receive 2 doses, at least 4 weeks apart.
LAIV is made from attenuated, or weakened, viruses and does not cause influenza, although it can cause mild signs or symptoms including rhinorrhoea, nasal congestion, fever or sore throat. Most common side effects from the vaccine are mild and transient compared to symptoms of influenza infection. Health topics Communicable diseases Influenza Vaccination Types of seasonal influenza vaccine. Types of seasonal influenza vaccine Archived Data set.
Twitter Facebook Linked In Mail. Efficacy and safety of high-dose influenza vaccine in elderly adults: A systematic review and meta-analysis. Epub Apr A meta-analysis of intradermal versus intramuscular influenza vaccines: immunogenicity and adverse events. Influenza Other Respir Viruses. Epub Sep Effectiveness of MFadjuvanted seasonal influenza vaccine in the elderly: A systematic review and meta-analysis.
A systematic review and meta-analysis of cross-reactivity of antibodies induced by oil-in-water emulsion adjuvanted influenza H5N1 virus monovalent vaccines. Epub May 5. The comparative effectiveness of adjuvanted and unadjuvanted trivalent inactivated influenza vaccine TIV in the elderly.
Epub Aug 6.
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