How does the flu vaccine work?

Vaccination against influenza - contraindications

Vaccination against flu contraindications

The flu epidemic has become habitual for a long time, and preparation for it has turned into something self-evident. Even children know how important prevention is. It is also well known that one of the best means for preventing influenza is vaccination. And only those who directly faced the problem know that the flu vaccine is not universal - it has contraindications. That is, not everyone can protect themselves from the disease with the help of a vaccine. More details about the negative aspects of vaccination against influenza will be described in the article.

Side effects of vaccination against influenza

Vaccines against influenza are of different types:

  1. Injection is more popular. There are no live viruses, but it gets into the body thanks to a shot.
  2. The second type of vaccine is aerosol. This means contains live viruses. Weakened, they do not pose a threat to the body, but contribute to the development of strong immunity.

Like any other vaccine, a flu shot can cause side effects. Different organisms perceive vaccination in their own way. The most frequent negative manifestations of vaccination are the following:

  1. Immediately after vaccination a person can feel weakness, fatigue, drowsiness. Sometimes the patient is tormented by fever and fever.
  2. Many people get a headache after the vaccination.
  3. One of the most unpleasant consequences of vaccination is a runny nose or a pharyngitis.
  4. The most serious and harmful complication of vaccination against influenza is anaphylactic shock. Fortunately, this side effect is extremely rare.
  5. A fairly frequent unpleasant consequence of vaccination is pain, swelling and redness at the injection site.

Most of the side effects the patient forgets about a couple of days after the vaccination. And in order to avoid more serious and complex consequences, it is necessary to get acquainted with the list of contraindications before vaccination.

Who is against the flu vaccine?

Despite the large number of benefits, some groups of patients may not be vaccinated against influenza. An alternative method of protection against a disease is recommended in the following cases:

  1. First, it is strictly forbidden to get a flu shot from people suffering from colds or ARVI. Vaccination is allowed at least a month after recovery.
  2. Secondly, an inoculation against influenza is contraindicated to people with an allergy to chicken protein.
  3. Specialists are in no hurry to vaccinate patients who did not have a good previous vaccination.
  4. This method of preventing influenza is not recommended for people with diseases of the nervous and endocrine systems.
  5. Additionally, patients suffering from kidney and adrenal problems should consult.
  6. Vaccination against influenza Grippol and its analogs are contraindicated for chronic diseases of the lungs, bronchi and upper respiratory tract.
  7. You can not vaccinate babies.
  8. Asthma, anemia, hypertension and general cardiacHarm to vaccine against influenzaInsufficiency can also serve as a contraindication to vaccination.

As you can see, there are a lot of contraindications to vaccination against influenza for adults. Therefore, in order to really benefit the vaccination, the procedure must necessarily be consulted with specialists and with understanding to treat their detailed inquiries about the state of health and the transferred diseases.

Do not forget that the vaccine is not a panacea. To completely protect yourself against the flu, you need to lead a healthy lifestyle, for the time of the epidemic, to supplement your diet with nutritious foods, fruits and vegetables.

Influenza vaccination for children: important features

The largest groups of risk for the incidence of influenza, according to medical statistics, are children who go to kindergarten and to school. In places of mass accumulation of children, the infection spreads much faster than among domestic babies. Therefore, flu vaccination is needed for children as air. But how and when to do it and how does it work?

flu vaccination for children

Why do I need a flu vaccine?

The flu virus is very dangerous for the baby's immature organism. It affects primarily the nervous, cardiac and respiratory system of the child, and also undermines its immunity. Therefore, you need to protect the baby from these harmful effects of influenza viruses by vaccinating him. How does the vaccine work and how does it protect the child's body from a dangerous flu?

Why do I need a flu vaccine?

After the child was vaccinated against the flu, antibodies that begin to form in the body, which act against influenza viruses, begin to form in the body. But only against those viruses that are in the vaccine.

There is one peculiarity that parents need to know: if a child is vaccinated against the flu for the first time and if he is not yet 9, the vaccine is needed not one but two. The second is done a month after the first, and then the baby will certainly be protected from influenza strains. In other cases, repeated vaccination is not required for the child.

How effective is the flu vaccine for children?

Observations by doctors show that the effectiveness of vaccination against influenza made to children is up to 90% if all conditions are met. That is, if the vaccine is of high quality, is made on time, if there are no contraindications and the age of the child is taken into account - from 6 months. Vaccination against influenza allows the child not to get sick even in the flu season, so it's definitely worth doing.

How effective is the flu vaccine for children?

The vaccine against influenza is not effective only if it is made in the presence of contraindications. These are the contraindications:

  • Age of child up to six months
  • Diseases in the child in the acute stage
  • If the child is already sick with flu or colds
  • If the child has a high fever
  • If a child has experienced an exacerbation of a chronic illness or has had a cold less than two weeks ago
  • The baby's allergy to egg white hen, which is part of most vaccines

If the child has complications after the vaccination, this should be immediately notified to the doctor.

Can I do another vaccination, other than a flu shot?

Yes. This is allowed even if the child is prone to flu-related illnesses. For example, if the child is a regular customer of the ENT doctor, is prone to viral infections, then two vaccinations can be given at once - against influenza and against pneumococci. And then the child will not get sick even if a vaccinated adult has become ill with the flu in the family.

How often do children get influenza vaccinations?

If the child has not yet turned 9 years old and has not yet received vaccinations, they are done two - with a break in a month. If a child is vaccinated against influenza from the age of six months, the interval is one year. During this year, the composition of the vaccine against influenza necessarily changes, because the formula changes and the influenza virus itself.

How often do children get influenza vaccinations?

Usually vaccinations for a child from influenza start to do from October to November, the same way. as well as adults. Previously, they do not make sense, because before the height of the flu, antibodies in the child's body must gain strength, and immunity strengthen, and not vice versa. If the vaccine is vaccinated against the baby too early, the immunity will have time to work and weaken its strength, and the flu will catch the child by surprise.

Can parents independently choose the type of flu vaccine?

Yes, they can, if there is such a choice. For example, if several kinds of vaccines are presented in the kindergarten, parents can choose to pay or be free. They can ask the doctor's advice if they do not know which vaccine should be chosen for the baby. As a rule, a nurse in the garden can recommend a spilite vaccine to the child, in which, in addition to antigens of viruses influenza, there is also a matrix antigen, which helps the child to make immunity much stronger and to resist infections. Representatives of these vaccines - Vaksigripp, Bigriak, Flyuarix.

Can parents independently choose the type of flu vaccine?

There are also vaccines of the third generation, which contain only one antigen - superficial. Representatives of these drugs - Influvak, Agrippal, Grippol.

Parents should not worry - both types of vaccines are very effective.

A vaccination against the flu for a child is a very important matter. And most importantly, parents do not ignore this important annual procedure.

Can parents refuse to vaccinate a child?

Yes they can. This is rare, and only if it is reliably known that the child has contraindications to vaccination.

Do I need to get a flu shot?

The flu is so dangerous for people that it is on the third place among the most treacherous diseases of our time. Therefore, doctors recommend that you vaccinate to avoid the flu and its complications. Meanwhile, up to 80% of US residents prefer to vaccinate, about 10% of the population of Russia, and in Ukraine - up to 1%. There are a lot of rumors about vaccinations - truthful and not very good. Do I need to get a flu shot?

Do I need to get a flu shot?

Who needs flu vaccination?

WHO argues that although everyone is sick with the flu, not everyone needs vaccinations. But there are groups of people who need flu shots. It:

  • Children from six months who have not yet acquired immunity to colds and whose immune system is still very weak
Who needs flu vaccination?
  • People with chronic diseases of the respiratory system (but not in an acute state and without temperature)
  • Those who have immunodeficiency
  • People who have crossed the threshold of 50 years

Why is it so difficult to get a flu shot?

In the composition of the influenza virus, there are special antigens, the formula and form of which forms varieties of the same viruses. These varieties, to our regret, change their composition every year, because of what it is quite difficult to find an effective vaccine against the flu.

Why is it so difficult to get a flu shot?

In order for the vaccine to be developed correctly and, accordingly, it is necessary to rely on the doctors' forecasts regarding the likely changes in the structure of the virus. This is quite difficult, so if the vaccine is not properly selected, you can not guess and not protect the person from the flu completely. The fact is that if scientists have not guessed with the vaccine, then it will not have enough antimatter to withstand the flu. With an incorrectly selected vaccine, its effectiveness is reduced by a factor of three - this explains the inefficiency of vaccinations.

What is the composition of the flu vaccine?

As part of the vaccination against influenza viruses are contained, but not alive, but already killed. These viruses, getting into the human body, increase its immunity and cause it to fight with the infection. Having trained on weak viruses, the body instantly recognizes influenza viruses that get to it from the external environment. And easily copes with them. In this - the essence of the vaccine against the flu.

What is the composition of the flu vaccine?

The vaccine differs from the present influenza virus in that it contains too weak viruses or inactivated viruses (generally without virus content). These are inactivated viruses and can give most complications after the flu. After the vaccination, two weeks pass from the flu, and this is the time when the body fully adapts to this type of flu. Therefore, it is better to vaccinate against influenza not during epidemics, but before their onset - beginning in October.

Pros of vaccination against influenza

Vaccination against influenza helps reduce the incidence of influenza in a rather impressive scale - this is a fact. For example, among the elderly people who were vaccinated against the flu, up to 60% later they are not sick with acute respiratory diseases in general. Vaccination from the flu makes it possible not to ache more than 80% of people of all ages who have been vaccinated. Children who were vaccinated against influenza cease to be ill in more than 92% of cases. Vaccination against influenza also reduces the likelihood of complications by more than a third - one of them is a painful otitis for children.

Cons of vaccination against influenza

There are also side effects of flu vaccination. They are related to:

  • Incorrect use of the vaccine (not corresponding to the influenza strain)
  • Vaccination in those conditions that are prohibited for vaccinations - pregnancy in the first trimester, high fever, acute disease during vaccination
  • A negative reaction to vaccine substances that were not taken into account
Cons of vaccination against influenza

Consequences of the negative reaction of the body to the vaccine - weakness of the body, redness at the injection site, fever and flu symptoms in mild form - headache, lethargy and so on. With a normal reaction of the body to the vaccine, these symptoms disappear within two days after the vaccination, and when complications - a person's condition deteriorates sharply after 6-12 hours from the time of vaccination.

It is worth knowing that, in addition to vaccination against influenza, there are other methods of prevention: more abundant drinking with vitamins (decoction of rose hips, sea buckthorn, tea with lemon and honey), wearing an antiviral mask, taking multivitamin preparations to maintain immunity, frequent washing hands. They should be used, because in the cold season, a person loses a lot of vitamins - up to 70% of what is needed!

Therefore, using a vaccine against influenza as the only means is wrong. But you do not need to give it up. Especially if you find yourself on the list of people who need flu shots.

Who does not have a flu vaccine?

There are people who do not get a flu shot, because it can cause a number of complications.

  • These are people with chronic diseases of the nervous system
  • Those who have problems with the genitourinary system (ureter, bladder, kidneys and so on)
  • People suffering from diseases of the endocrine organs (thyroid, adrenal, pituitary)
  • Those who have heart failure, and clearly expressed
  • People with bronchial asthma
  • Patients with blood diseases of any age
  • Pregnant women before the third trimester of pregnancy
  • Those who have an allergy to chicken protein

Vaccination against influenza, introducing viruses into the body, can cause an adverse reaction even in healthy people who do not suffer from the above contraindications.

Influenza in Figures

Today the flu is a real plague of the century. In terms of complications and mortality, influenza is in third place after cardiovascular diseases and cancer. And the flu together with ARVI occupy 95% of infectious diseases. These viruses each year strike up to 500 million people on the planet. Of these people, up to 2 million people die. To reduce these deaths, scientists recommend vaccination.

Vaccination, according to WHO, should protect people from the flu and prevent complications after the flu, not to mention the mortality, which is significantly reduced. The vaccine works, strengthening primarily the immune system.

Influenza in Figures

But, unfortunately, this protection does not always work. As a minus, it is not always right for physicians to select a vaccine, but as a plus, even if the vaccine does not fully protect against infection with the virus, but it makes it possible to weaken its influence on the body.

More on the influenza virus

The flu virus is far from alone. There are at least three of them - the influenza virus A, B, C - as the first letters in the English alphabet. The most dangerous is considered to be influenza type A, epidemics and pandemics are associated with it. Influenza type B is also not a gift - it causes damage to the body in many people, but affects people more locally. The most mild in its impact is the influenza C virus, although it is undesirable to suffer from none of the three types of influenza.

How quickly does the flu vaccine work? And is it worth doing it at all?



Inoculation is done only from ONE type of influenza. and not the fact that this species is attacking the population in the coming month.
In addition, in our polukliniki do not take into account the state of the patient at the time of vaccination. if there is a malaise - the vaccination will only exacerbate the disease.


that's how much they have not done, always only worsening, I do not do it for two years and everything is normal ..

Personal Cabinet Removed

I know a doctor advised to make an inoculation. I do not regret it.

Silver Shark

How does it act as a simple vaccine. Easy malaise and all but how quickly it depends on each person. Personally, I think that the flu vaccines do not give the effect. But this is my opinion.

Personal Cabinet Removed

I do not know how soon it works, but I'm sure it will not hurt to be safe.


It is better not to. If immunity is lowered at the time of immunization, then you will get sick with the flu.


It is better not to do it if you are in the pre-catarrhal period.

kolya novikov

I think that it does not need to be done at all. If you are interested, then you can read about the alternative in my past answers.

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