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Influenza vaccines, colloquially known as flu shots[14] or the flu jab, [15] are vaccines that protect against infection by influenza viruses. [16][17] New versions of the vaccines are developed twice a year, as the influenza virus rapidly changes. [16]
28 Οκτ 2024 · Some ingredients in the seasonal flu vaccine vary from year to year based on the flu virus strains expected to cause illness. Other ingredients, such as preservatives, stabilizers, adjuvants, antibiotics, and inactivating ingredients, are common in vaccines and have been extensively tested for safety and effectiveness.
The flu vaccine for older adults, Fluad, uses an adjuvant branded MF59, which has squalene (9.75 milligrams), citric acid (0.04 milligrams) and three emulsifiers: polysorbate 80, sorbitan trioleate, sodium citrate (1.175, 1.175 and 0.66 milligrams respectively). [27]
The most common way that flu vaccines are made is using an egg-based manufacturing process that has been used for more than 70 years. Egg-based vaccine manufacturing is used to make both inactivated (killed) vaccine (usually called the "flu shot") and live attenuated (weakened virus) vaccine (usually called the "nasal spray flu vaccine").
8 Σεπ 2020 · Here are some ingredients you’ll find in the flu shot: Egg protein. Many flu vaccines are made by growing the viruses inside fertilized chicken eggs. This means that they contain a small...
17 Σεπ 2024 · This shot is made without influenza viruses and contains three times the antigen (the part of the vaccine that helps your body build up protection against influenza viruses) than other standard-dose inactivated influenza vaccines, to help create a stronger immune response.
This page shows the ingredients in influenza vaccines currently available for use in the U.S. Find out more about influenza and the vaccines that protect against it. Inactivated, egg-based influenza vaccines
