What is the injection method for the influenza vaccine?

May 10, 2023 Source: Cainiu Health

Dr. Guo Xiheng

Introduction

The influenza vaccine is generally administered by injection into the deltoid muscle on the outer side of the upper arm. Also known as the flu vaccine, it is used to protect against influenza caused by the influenza virus and is categorized as a self-paid vaccination. Currently, this vaccine is an inactivated influenza vaccine, typically composed of three virus strains. It is one of the primary measures for controlling influenza.

Influenza vaccination is generally administered via injection into the deltoid muscle on the outer side of the upper arm. Specific details are as follows:

The influenza vaccine, also known as the flu shot, is designed to protect against influenza viruses that cause seasonal flu and is categorized as a self-paid vaccination. Currently, this vaccine is an inactivated influenza vaccine, typically composed of three virus strains. It is one of the primary measures for controlling influenza and can effectively reduce the risk of infection. Generally, the body develops protective antibodies within 2–3 weeks after vaccination, which can trigger a protective immune response upon exposure to the virus. The standard administration method involves a single intramuscular injection in the deltoid muscle of the upper arm; one dose is sufficient for adults and children aged three years and older. Children aged 6 to 35 months require two doses, administered four weeks apart. After vaccination, most individuals may experience systemic reactions such as fever and local pain at the injection site, while a minority might develop symptoms such as fatigue.

It is recommended that individuals remain at the vaccination site for 30 minutes of observation after receiving the vaccine. If any adverse symptoms occur, they should seek medical attention promptly.

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