After the epidemic, everyone has a new understanding of vaccines. Recently, many parents have inquired about influenza vaccination: Should I get a flu vaccine? As a professional pediatrician, I will share with you the knowledge about influenza vaccines.

After the epidemic, everyone has a new understanding of vaccines. Recently, many parents have inquired about flu vaccination: Should I get a flu vaccine? how to choose? Questions such as what situations cannot be vaccinated.

As a professional pediatrician, I will share with you the knowledge about influenza vaccine.

Is it necessary to get the flu vaccine?

is very necessary!

Influenza is an acute respiratory disease caused by influenza virus that harms the human body. It is highly contagious and the virus is cunning and changeable.

can cause 3 to 5 million critical cases worldwide every year. Among them, the elderly, the weak, the sick, pregnant women and patients with underlying diseases have a higher probability of severe illness and death after contracting influenza.

This year is a troubled year. The global epidemic situation of the new crown epidemic is still severe. After entering the autumn and winter, it is very likely that respiratory diseases such as influenza and the new crown epidemic will superimpose. Once you get the flu, you will most likely have a high fever, and the fever of your child usually occurs late at night. You have to take him to the hospital in the middle of the night to line up for a checkup, and also have to do a nucleic acid test. The whole family is very busy. Thinking about this scene makes you crazy. enough. The influenza vaccine is the best means of prevention and can effectively reduce the incidence of illness. Why not spend a little money to take care of important things?

How to choose the flu vaccine? How to vaccinate?

This year’s influenza vaccine is different from previous years. It is divided into several dosages and dosage forms. In addition to trivalent inactivated influenza vaccine (IIV3) and quadrivalent inactivated influenza vaccine (IIV4), it also has the addition of one developed by Changchun Baike Biotechnology Co., Ltd. Lyophilized nasal spray influenza live attenuated vaccine .

html Babies aged 16 to 35 months: receive trivalent inactivated influenza vaccine in 0.25mL dosage form.

is currently produced by Pasteur , Sinovac Biotech and Changchun Biotech across the country. It should be noted that although Pasteur is a foreign brand, it is currently produced in Shenzhen.

Normally, there will be no substantial difference in the cracking process between these three companies, so no recommendations are made; and this year's vaccine supply exceeds demand, and each place often only purchases one product. If you can make an appointment, you can use whatever is available.

html School-age children and adolescents aged 13 to 17 years old: You can choose to be vaccinated with any of the following three types, 0.5mL dosage form of trivalent inactivated influenza vaccine, quadrivalent 0.5mL dosage form of inactivated influenza vaccine, and trivalent nasal spray vaccine.

Price: trivalent nasal spray vaccine is 298 yuan/dose, trivalent injection adult vaccine is about 60-75 yuan/dose, and quadrivalent injection adult vaccine is about 150 yuan/dose.

The trivalent nasal spray vaccine does not require an injection. It only needs to be sprayed once in each nostril. It is good news for students who are afraid of injections and . It also alleviates some parents’ concerns about their children’s unwillingness to get injections.

Adults ≥ 18 years old: 0.5mL dosage form three The trivalent inactivated influenza vaccine or the quadrivalent 0.5mL dosage form inactivated influenza vaccine

trivalent vaccine protects against 3 types of influenza viruses, and the quadrivalent vaccine protects against 4 types of influenza viruses. In terms of protective effect, the quadrivalent vaccine is relatively strong.

But don’t be obsessed with the quadrivalent vaccine. In view of the situation this year, you should get vaccinated first if there is anything available. You are afraid that if you wait and wait, even the trivalent vaccine will be out of stock.

When is vaccination effective?

Influenza is a highly contagious respiratory disease that occurs most frequently in autumn and winter, and is prevalent from November to March of the following year.

It takes 2-4 weeks for the body to produce protective antibodies after receiving the influenza vaccine, and the antibody titers begin to decay after 6-8 months. In order to obtain protection before the high incidence season, the golden period for vaccination is from September to October every year. If you miss the time, you can choose to get vaccinated at any time during the flu season.

Who needs to get the flu vaccine?

htmlIt is recommended for people over 16 months of age and those without contraindications to get the flu vaccine.

According to the recommendations of Chinese Center for Disease Control and Prevention, the following groups are priority for vaccination:

htmlChildren aged 16 months to 5 years old, elderly people aged 60 years and above, patients with underlying chronic diseases, medical staff, and family members of infants under 6 months old and caregivers, pregnant women, or women planning to become pregnant during flu season.(Whether you are pregnant, preparing for pregnancy, or breastfeeding, it is strongly recommended to get vaccinated, especially for breastfeeding mothers, because babies under six months old cannot be vaccinated.)

I received the flu vaccine last year. Do I still need to get vaccinated this year? Required by

.

Influenza vaccines mutate every year, and the circulating influenza strains are not exactly the same. Therefore, the serotypes of influenza vaccines produced are provided by the WHO after annual surveys. In addition, even if the circulating serotypes this year and last year are the same, since the protection period of the vaccine is only one year, vaccination is required this year to ensure the preventive effect.

Under what circumstances cannot you get the flu vaccine?

Why do I still get the flu after being vaccinated?

No vaccine has a 100% protective effect, and the same is true for influenza vaccines. Current data shows that the effective prevention rate of influenza vaccines is 70%.

Influenza vaccination is the most effective way to prevent influenza and can significantly reduce the risk of contracting influenza and serious complications.

The symptoms of a cold may be similar to those of the flu, and are often easily confused. However, the common cold and the flu are different diseases. Do not mistake a cold for the flu. In addition, please note that influenza vaccination can only prevent influenza viruses, not colds.

What are the adverse reactions of influenza vaccination?

Influenza vaccine may cause redness, swelling, pain, fever and other symptoms at the injection site, but they are relatively mild and last relatively short.

If redness and swelling appear, you can apply cold compress within 24 hours, and apply hot compress or potato slices after 24 hours.

developed fever after vaccination. It is more common within 24 hours after vaccination, and the duration of fever generally does not exceed 48 hours.

• If the body temperature is >38.5℃, take acetaminophen or Motrin.
• If the body temperature is <38.5℃,>

If fever appears only a few days after vaccination, or is accompanied by other symptoms, such as cough, or high fever that persists, it is probably not caused by the vaccine. Please seek medical attention in time.

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