Why is it so dangerous flu?

Why is it so dangerous flu?

#Influenza symptoms treatment.
Here it is just many people do not understand. All complications occur not by the virus, and under the influence of secondary infections. Pneumonia caused by virus develops in a few cases, it takes place on the background of the flu very seriously, often combined with purulent processes, with practically incurable and often leads to death. All this is because, getting on mucosal respiratory virus clings to the tissue, and destroys cell membranes penetrates. Then, with great speed it begins to multiply. Within 24 hours from the moment of getting the virus in the body of 1 virus particle is formed above 1023 new particles.

If we consider the impact of the process of the virus to the cells of the body, it can be said that the epithelium of the mucosa withers away under the influence of the virus. Dead cells are rejected, and the remaining cells have little or no protection from secondary infection.

That is why the flu so often associated with bacterial infections of the respiratory system.
With the capture of respiratory disease in a patient there is a cough, accompanied by the formation of purulent secretions. Then viruses enter the bloodstream and distributed to all tissues and organs. From the blood, the virus destroys the blood path, under its influence in the vessels of developing toxic-allergic process, it does not compress the vessels and their walls are formed by microscopic
thrombi. In particularly difficult types of flu likely to develop diffuse thrombosis of small blood vessels that supply blood to the internal organs, which stimulates abnormal function of these organs.
Above all, during the flu affects the blood vessels of the brain and respiratory system. In the case of particularly complex types of flu hemorrhagic pneumonia may develop (with hemorrhage). Infringement in a state of cerebral vessels cause swelling of the tissues, as well as an increase in intracranial pressure. Therefore, the flu is often prescribed to visit consultation neurologist or cardiologist.
In addition to the above, influenza virus is able to reduce the body’s resistance. It inhibits the activity of certain parts of the immune system, preventing and pushing the immune response. Influenza virus disrupts blood production system, including immune cells. In addition, the virus reproduces at such a rate that the immune system has not kept pace to produce antibodies to it and a sufficient amount of interferon — basic substance, which protects cells from getting the virus …

whether the vaccine will save from the virus?

The most optimal for all influenza vaccines is the period from September to October, it was then the beginning of the epidemic season that falls, as a rule, in January-March, produced by the immune defense. At a high level, this protection works of about 6 months, and then begin to decline.
Until now, even among doctors there is no unequivocal opinion — vaccinated if everything from the flu or not, the supporters of this method of prevention convinced that the development, implementation in practice or the purchase of the vaccine abroad is much cheaper than the annual losses to the economy of mass epidemics, not to mention on protection of public health. The difficulty lies in the fact that the flu virus is highly variable, it is impossible to accurately predict what strain will cause an epidemic in a given year. Therefore, if the prediction was accurate, the vaccine will work most effectively at 75-90%, otherwise it will be less effective, but in this case the positive effect will be as different influenza strains have common structural features. If vaccination was not made within a specified time, then it can be done at the beginning of the epidemic, but we must remember that a sufficient number of antibodies produced only after 2-4 weeks.

! Contraindications to the use of vaccines are allergic to components of the drug, exacerbation of chronic diseases, immunodeficiency states.

WHO recommends first vaccination should be carried out in the following risk groups: adults older than 50 years, children aged 6 months to 3 years, and those with abnormalities of the heart and lungs with a weakened immune protection, HIV-infected, pregnant. In addition, vaccination is obligatory for medical staff, police, rescue workers and other persons who perform important public functions.

FLU.

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