What Are the Signs of an Allergic Reaction to a Flu Shot?

The vaccine used to prevent influenza caused by the influenza virus (referred to as influenza) is called influenza vaccine, which is a self-funded vaccination. The current influenza vaccine is an influenza virus inactivated vaccine, consisting of three viruses. Flu vaccine is one of the main measures to prevent and control influenza. Can reduce the chance of flu infection or reduce flu symptoms.

Basic Information

Drug Name

Flu vaccine

Foreign name

Influenza Vaccines

Main indications

Prevention of influenza

Drug type

vaccine

The significance of flu vaccination

Influenza virus is divided into three serotypes: A, B, and C. Type A can cause a pandemic due to a more dramatic mutation in its antigen structure, which is estimated to occur every 10 to 15 years. The scale of the B virus is small and limited: C The type is generally epidemic and the disease is mild. This type 3 can cause laryngitis, bronchitis, bronchitis, bronchiolitis, and pneumonia. The population is generally susceptible. The main clinical manifestations are fever, headache, general weakness, and many respiratory symptoms such as runny nose, dry cough, and pharynx. Pain, accompanied by myocarditis and pericarditis. Vaccination is the main measure to prevent influenza. Two to three weeks after vaccination with influenza vaccine, immunity is usually obtained. When the body comes into contact with the influenza virus targeted by the vaccine, a protective immune response can be initiated.

For influenza vaccination

The Chinese Center for Disease Control and Prevention's "Technical Guide for the Application of Seasonal Flu Vaccines in China (2014-2015)" clearly states that influenza vaccines are safe and effective. The following people are recommended as priority vaccination targets:

Pregnant woman

Family members and caregivers for infants under 2.6 months of age.

3.6 months to 5 years old.

4. Seniors aged 60 and over.

5. Patients with specific chronic diseases.

6. Medical staff.

Flu vaccination time

The best time to get the flu shot is before the start of the annual flu season. In China, especially in the northern regions, winter and spring are the annual influenza epidemic seasons. Therefore, September and October are the best time for vaccination. Of course, vaccination also has a preventive effect after the start of the flu.

Flu vaccine immunization procedures and doses

Intramuscular injection of the lateral deltoid muscle of the upper arm, 1 dose per injection.

Vaccinate before or during the flu season. Adults and children over 3 years of age receive one vaccination at a dose of 0.5ml. From June to 35 months, children are vaccinated with 2 shots, each dose is 0.25ml, 4 weeks apart.

Flu vaccine contraindications

1. Any other ingredients (including excipients, gentamicin, formaldehyde, kanamycin, lysing agents, excipients, etc.) in eggs or vaccines, especially those who are allergic to ovalbumin;

2. Those suffering from acute disease, acute exacerbation of severe chronic disease and fever;

3. Uncontrolled epilepsy and other progressive neurological diseases, with a history of Guillain-Barre syndrome.

4. If you have a high fever or an acute infection, it is recommended to get the vaccine after the symptoms have subsided for at least 2 weeks.

5. Any nervous system reaction after injection is prohibited.

6. This vaccine is strictly prohibited for intravenous injection.

7. Family and individuals with a history of convulsions, those with chronic diseases, those with a history of epilepsy, and those with allergies should use this product with caution.

Reactions and precautions after influenza vaccination

The most common reaction after influenza vaccination is pain at the vaccination site, and symptoms such as general fever and fatigue are rare. Avoid fasting vaccination. Observe 30 minutes after vaccination. At the same time, you need to be careful not to sit back and relax after getting the flu vaccine. It is impossible for any kind of vaccine or vaccine to have 100% protection on the human body, so prevention and protection measures are usually needed.

Note: The above content is only for introduction, the drug use must be carried out by a regular hospital under the guidance of a doctor.