Seasonal Flu Vaccination: Protecting Your Health

The article highlights the importance of annual influenza vaccination to prevent serious health complications. It explains the vaccine's composition, how it works, target populations, and precautions. The vaccination is key to reducing flu-related illnesses, especially in vulnerable groups. Proper administration and awareness of side effects are emphasized, promoting safe and effective flu prevention strategies. Protect yourself and your community by staying updated with your yearly flu shot, a vital public health measure.

Seasonal Flu Vaccination: Protecting Your Health

Seasonal Flu Vaccination

Purpose
Influenza is a contagious viral illness that cannot be treated with antibiotics. Management focuses on relieving symptoms such as fever and body aches, and antiviral drugs may shorten the illness if taken within the first 48 hours of exposure. Rest and hydration are crucial. Without proper care, influenza can lead to severe complications like pneumonia, which can be life-threatening. Therefore, getting vaccinated annually is essential to prevent infection and protect public health.

Vaccine Name and Composition
The most common vaccine is called Quadrivalent inactivated influenza vaccine, marketed under Fluarix Tetra. It contains antigens from four virus strains:

A/Michigan/45/2015 (H1N1)pdm09-like virus

A/Hong Kong/4801/2014 (H3N2)-like virus

B/Brisbane/60/2008-like virus

B/Phuket/3073/2013-like virus

Each 0.5 ml dose includes 15 micrograms of hemagglutinin from each strain, providing broad protection against the circulating flu viruses.

How It Works
The vaccine stimulates the immune system to produce antibodies targeting the hemagglutinins on the virus surface. These antibodies help neutralize the flu viruses, boosting immunity against the strains included in the vaccine.

Administration Timing
The flu shot is recommended annually, ideally before the flu season peaks in October.

Target Groups and Usage
It is suitable for individuals aged 3 years and older. Children aged 3-9 who are receiving the vaccine for the first time should get a repeat dose after at least four weeks to ensure full immunity.

Precautions

Review patient's vaccination history and previous reactions.

Provide immediate medical care in case of allergic reactions.

Delay vaccination if the individual has an active high fever.

Administer strictly via intramuscular injection; avoid intravenous or subcutaneous routes.

Use caution when vaccinating individuals with bleeding disorders.

Pregnant women should receive the vaccine only if benefits outweigh potential risks.

Potential Side Effects
Common reactions include muscle pain, fatigue, swelling or redness at the injection site, headache, and mild fever. Rare side effects like rash, dizziness, or allergic reactions may occur, requiring medical attention.

Usage and Administration
The vaccine is given as a single intramuscular injection into the deltoid muscle or thigh, depending on muscle mass. It must never be administered intravenously or under the skin to prevent severe reactions. A standard dose is 0.5 ml, given annually during flu season.

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