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The virus multiplies rapidly and evolves easily.

The incubation period for influenza is short, often a few hours. Among all respiratory diseases, only influenza has pronounced symptoms of intoxication, which begins to buy methocarbamol online from the first hours of the disease. Redness of the soft palate and pharynx, high body temperature are the main symptoms of the flu. The photo shows a schematic structure of the influenza virus.The flu has claimed many human lives on the planet. Its epidemics are recorded annually. In the 19th century alone, 45 epidemics were recorded.

Every year, 300-500 thousand people die from influenza complications in the world. The causative agent of influenza is evolving at an astonishing rate. Scientists do not have time to create new vaccines. Epidemics with a large number of deaths occur every 12 years. Epidemics with fewer victims are recorded annually. In USA, more than 30 million people suffer from influenza every year. Among all respiratory infections, influenza accounts for up to 12%. The remaining 88% account for.

Parainfluenza viruses - up to 50%, adenovirus infections - to order robaxin online , respiratory syncytial virus - up to 4%, mycoplasma - up to 2.7%, enteroviruses - up to 1.2%. Up to 23% of cases are mixed infections. Of all the above infections, only the influenza virus is the cause of devastating pandemics with high morbidity and mortality. In the fall, parainfluenza viruses infect a person more often, in winter - respiratory syncytial and influenza viruses, in late summer and early autumn - enteroviruses, adenoviruses infect a person throughout the year.

This is an RNA-containing virus of the orthomyxovirus family, which has three antigens of robaxin pills.

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Virus particles are thousands of times thinner than a human hair.

In the photo, the structure of the influenza virus (3D model on the left and diagram on the right). The virus has an elongated shape. Its elongated shape is due to the matrix - the structural protein M2, which contains 8 RNA molecules twisted into a spiral. They make up the genome of the virus.

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In the photo, influenza viruses in the light of an electron microscope.

In the photo, the influenza virus (3D model). Its outer side is represented by a membrane, in the structure of which surface proteins (hemagglutinin and neuraminidase) are located. The membrane is permeated with ion channels. Hemagglutinin allows the virus to contact the host cells and penetrate deep into it. Neuramidase promotes the separation of newly formed viral particles from the cell for subsequent penetration into new host cells.

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Hemagglutinin and neuraminidase determine the narrow specificity of viruses - toxigenicity, variability and immunogenicity.

The photo shows the influenza virus (3D model). The M2 protein of the virus contributes to the formation of channels through which hydrogen ions penetrate into it, triggering the mechanisms for the proper unpacking of the genome and the production of RNA copies. The photo shows the influenza virus (3D model). The polymerase complex is involved in the creation of virus RNA copies and the synthesis of structural proteins for new viruses.