FLU win – an acute viral disease, anthroponosis is transmitted by airborne droplets. It is characterized by acute onset, fever, general intoxication and respiratory tract lesions. The etiology and pathogenesis. Pathogens Flu belong to the family ortomiksovirusov, which include genus influenza A viruses, the genus of the influenza virus B and C. Influenza A viruses are divided into type A, many serotypes. Continually rise to new antigenic variants.
Influenza virus quickly killed by heating, drying and disinfectants under the influence of various agents. Infection atriums are upper respiratory tract. The influenza virus selectively infects columnar epithelium respiratory tract, especially the trachea. Increased permeability of the vascular wall leads to disruption of the microcirculation and the appearance of hemorrhagic syndrome (hemoptysis, epistaxis, hemorrhagic pneumonia, entsefa-shovel). Influenza causes reduced immune responsiveness. This leads to an exacerbation of various chronic diseases – rheumatism, chronic pneumonia, pielita, cholecystitis, dysentery, toxoplasmosis, etc., and also to the emergence of secondary bacterial complications. The virus persists in the patient's body, usually within 3-5 days of onset of the disease, and complications of pneumonia at-to 10-14 days. Symptoms flow.
The incubation period lasts from 12 to 48 hours typical flu starts badly, often with chills or chilling, body temperature rises rapidly, and already the first day of fever reaches its maximum level (38-40 C). Showing signs of intoxication (fatigue, weakness, sweating, muscle aches, severe headache, eye pain) and respiratory symptoms (dry cough, Pershe-tion in the throat, soreness in the chest, hoarseness vote). In a study of marked hyperemia of face and neck, injected sclera-tion of vessels, increased sweating, bradikar-diya, hypotension. Detected lesion of the upper respiratory tract (rhinitis, pharyngitis, laryngitis, tracheitis). Particularly affected are often the trachea, whereas rhinitis is sometimes absent (so called akataralnaya form of influenza). Characterized by redness and a kind of grainy mouth mucosa. Tongue coated, may be-hratkovremennoe diarrhea. Complications of the central nervous system manifested in the form of Me-iingizma and encephalopathy.