How Does Fluzone High-Dose Differ from Other Flu Vaccines?

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Fluzone High-Dose is an injected flu vaccine formulated for people age 65 years and older. Like other flu vaccines, Fluzone High-Dose is made up of the three flu strains most likely to cause the flu during the upcoming season. The high-dose vaccine, however, contains four times as much flu virus antigen — the part of the vaccine that stimulates the immune system — as regular Fluzone and other standard flu vaccines. Read more.

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