When should I get a flu vaccine?

Feb 13, 2025 Source: Cainiu Health

Dr. Ren Yi

Introduction

In general, influenza refers to the flu. The flu vaccine is usually administered from September to November each year, but the specific timing may vary depending on the region and the prevalence of the influenza virus. After receiving the flu vaccine, one should remain at the vaccination site for about 30 minutes to ensure no allergic reactions or other adverse symptoms occur.

Generally speaking, influenza refers to the flu. The flu vaccine is usually administered from September to November each year, although the exact timing may vary depending on the region and the prevalence of the influenza virus. A detailed explanation is as follows:

Most regions and institutions recommend receiving the influenza vaccine annually between September and November, as this period typically precedes the flu season. Getting vaccinated before the high-incidence season ensures sufficient antibody production to achieve protective effects. If this vaccination window is missed, vaccination can still be chosen afterward to help prevent subsequent infection.

As the influenza virus mutates easily, the virus strains circulating each year may change; therefore, the composition of the influenza vaccine is updated accordingly. To maintain effective immunity, it is recommended to receive the influenza vaccine annually between September and November.

After receiving the influenza vaccine, individuals should remain at the vaccination site for about 30 minutes to ensure no allergic reactions or adverse symptoms occur. It is important to keep the injection site clean and dry to avoid infection. Additionally, consumption of spicy or irritating foods should be avoided to prevent interference with the vaccine's effectiveness.

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