Is it safe for me to have 2 Flu vaccinations in 1 season?

About flu
Last updated: 24/08/21
Answer By Dr Richard Dawood Medical Director
Date Added: 20/07/21

It is not normally necessary or recommended to have multiple flu vaccinations in the same flu season but if you do, it does not cause harm.

Flu vaccines protect against a number of flu strains; either 3-strains, trivalent flu jabs or 4-strains, quadrivalent flu jabs. In addition, they can also be “high-dose” or “adjuvanted” – flu vaccines approved for people 65 years and older to produce a greater immune response for more protection.

It is therefore possible that an older person or those with reduced immunity could have a high-dose flu vaccine followed by a standard dose of flu vaccine to enhance its effectiveness. A second dose, whether intentional or inadvertent, would not be expected to cause harm.

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