PPT-What is a virus? A virus is…

A virus from the Latin virus meaning toxin or poison is a microscopic organism consisting of genetic material RNA or DNA surrounded by a protein lipid or glycoprotein coat Structure of a virus. MECANISMOS DE PATOGENICIDAD Y ADAPTABILIDAD HUMANA DE CEPAS GRIPALES AVIARIAS Y PORCINAS. Dr. A. Paño. EPIDEMIOLOGIA . : ES LA CIENCIA QUE ESTUDIA LAS ENFERMEDADES TRASMISIBLES Y NO TRASMISIBLES Y LOS FACTORES QUE DETERMINAN SU FRECUENCIA Y DISTRIBUCIÓN EN LA POBLACIÓN.. Charles J. Russell, PhD. postdoc: Crystal Burke, PhD. Funding: NIAID R01AI083370. HPIV1, HPIV2, HPIV3. leading cause of pediatric hospitalization (21,000/. yr. in USA). . virtually all infected by age 5; reinfections common but usually less severe. Charles J. Russell, PhD. postdoc: Crystal Burke, PhD. Funding: NIAID R01AI083370. HPIV1, HPIV2, HPIV3. leading cause of pediatric hospitalization (21,000/. yr. in USA). . virtually all infected by age 5; reinfections common but usually less severe. (The DNA Virus). Prepared by:. Miss . Norzawani. . Jaffar. Bsc. (. Hons. ) Biomedical Sciences, UKM. Lecture 17. Learning Outcomes. At the end of this learning session, student must be able to;. Classify the viruses. Acquired Immune Deficiency Syndrome. HIV/AIDS. HIV-Human Immunodeficiency Virus. AIDS-Acquired Immune Deficiency Syndrome. Normal: T-Cell Count of 800-1200 cells/mm3. Low: T-Cell Count of 650-800 cells/mm3. ). &. {Hepatitis C}. . ARE YOU AT RISK? . WHAT ARE HIV AND AIDS?. HIV is the Human Immunodeficiency Virus. It weakens your body’s ability to fight off sickness.. The HIV virus can cause AIDS.. Dra Ivette Lorenzana de Rivera . MSc. . . ARBOVIRUS. ar. thropod-. bo. rne . virus. es. Virus transmitidos por artrópodos. Definición de la OMS:. . “Virus mantenidos en la naturaleza a través de transmisión biológica entre el vertebrado susceptible y los artrópodos hematófagos o por medio de transmisión transovárica entre los artrópodos”.. Orthomyxoviridae family of viruses. RNA enveloped viruses that make up three genera. Influenzavirus A. Influenzavirus B. Influenzavirus C. The type A viruses are the most virulent among the three, genetically diverse and infecting human, birds and animals. Virus. What am I?. Virus. What am I?. Virus. What am I?. Virus. How do I spread?. Virus. How do I spread?. Virus. How do I spread?. Virus. How do I spread?. Virus. How do I spread?. Virus. What is my relationship between human behavior and me?. The influenza virus group consists of three enveloped RNA members of the family Orthomyxoviridae:. influenza A, B, and C. . Influenza A . viruses are further classified into hemagglutinin (H) and neuraminidase. ( HeV ) and Nipah virus ( NiV ) emerged in the last decade of the twentieth century as the causes of outbreaks of respiratory and neurological disease that infected a number of animal species and h RNA virus. of the family . Orthomyxoviridae. that is responsible for the infectious disease . influenza. (or most commonly referred to as flu) in birds, various mammals (such as pigs) and humans. Typically, influenza is characterized by fever, sore throat, chills and other non-specific symptoms, it is a much more severe disease. It is spread around the world in seasonal epidemics and according to World Health Organization, these annual epidemics result in about three to five million cases of severe illness, and about 250 000 to 500 000 deaths.. . Outside . their host cells, viruses survive as . virus particles. , also known as . virions. . The . virion. is a . gene delivery . system; it contains the virus genome, and . its functions . are to protect the genome and to aid its . Viruses are very small – smaller than the smallest cell.. They are usually surrounded by a capsid of proteins.. For replication, viruses rely on their host cells . ie. ., the cells they infect.. Most viruses exhibit a limited host range- they typically infect only specific types of cells of one host species..