VIRUSES Prepared by: Toletai D. Group: FK-12 -5 k 2 Accepted by: Begalieva A.
HISTORY OF DISCOVERY 1852, Russian botanist Dmitry I. Ivanovsky opened the tobacco mosaic virus, getting infectious extract of tobacco plants infected with mosaic disease.
CHARACTERIZATION OF VIRUSES Viruses - intracellular parasites; small molecular weight; do not have cellular structure and simply arranged; the absence of ribosomes; Are not able to multiply outside the cell; not its own metabolism is the host cells do not show signs of the living; may crystallize; The currently known viruses that reproduce in the cells of plants, animals, fungi and bacteria; Cause dangerous diseases.
THE STRUCTURE OF THE VIRUS Nucleic acid Chemicals. DNA RNA proteins carbohydrates lipids viruses According to the structure: simple or difficult Вирусы По составу: ДНК или РНК содержащие Virions different viruses: ? A-pox virus -vaktsiny; b-herpes simplex virus human? in-hepatitis B virus, Mr. human adenovirus, e-flu virus? e-hepatitis A virus, bacteriophage lambda rail
THE STRUCTURE OF THE BACTERIAL VIRUS Virus bacteria-bacteriophage (phage) bacteriophages "Eaters of bacteria" Opened in 1917 at the same time in France and England Used in the treatment of diseases caused by certain bacteria. Scheme of phage DNA
MEASLES Measles - an acute infectious disease characterized by symptoms of intoxication, fever, catarrhal symptoms from respiratory and exanthema. Pathogen - virus, are unstable in the environment. Measles is a highly contagious illness to. The only way transmission - airborne. Inside the dwelling measles can spread over relatively large distances. For measles is characterized by fever, conjunctivitis, runny nose, cough, and appearance on the buccal mucosa of small whitish spots. On the 3 -4 th day of illness with a rash characteristic landmark rash. Patients with measles are usually isolated and treated at home. Hospitalization is performed as clinically indicated (persons with severe and complicated forms of the disease). Place the patient in office cubicles
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