PPT-Virus and

Viroid Plant Pathogens Kenneth L Johnson II USDA National Needs Fellow University of Florida Plant Medicine Program IPM Florida IPM Apprentice Kirk W Martin SMNRCM CBSP USDA National Needs Fellow. 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. Patrick . Zelko. Lab 1-2 West Nile Virus Patrick . Zelko. What Is WNV?. Transmitted by mosquitoes that bit infected birds. First identified in eastern Africa in 1937. Now worldwide in tropical and temperate climates. . Virology lecture 3. . . Dr. . Sadia. . Anjum. Entry of avian . leukosis. virus . (a model, simple, retrovirus). Classically all retroviruses were thought to be pH-independent. More recently ALV has been proposed to require low pH, but in addition to its receptor-induced conformational change. Part I: . History, Transmission, and Clinical Presentation. U.S. Department of Health and Human Services. Centers for Disease Control and Prevention. This presentation is current . as of . December . 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?. By: Maddy Connell, Ava . Taurino. , and Shane Landue. Overview .  What is a virus?.  Structures of viruses.  How viruses reproduce.  Cells infected by viruses.  Diseases caused by RNA viruses.  The Lytic Cycle. Division of Public Health. Background. Mosquito-borne emerging . arbovirus. . Closely related to dengue, yellow fever, Japanese encephalitis and West Nile viruses. First identified in Uganda in 1947. 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. Selim AA, Erfan AM, Hagag N, Zanaty A, Samir A, Samy M, et al. Highly Pathogenic Avian Influenza Virus (H5N8) Clade 2.3.4.4 Infection in Migratory Birds, Egypt. Emerg Infect Dis. 2017;23(6):1048-1051. https://doi.org/10.3201/eid2306.162056. Kurth A, Wibbelt G, Gerber H, Petschaelis A, Pauli G, Nitsche A. Rat-to-Elephant-to-Human Transmission of Cowpox Virus. Emerg Infect Dis. 2008;14(4):670-671. https://doi.org/10.3201/eid1404.070817. Fedson DS. Meeting the Challenge of Influenza Pandemic Preparedness in Developing Countries. Emerg Infect Dis. 2009;15(3):365-371. https://doi.org/10.3201/eid1503.080857. . 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 . Jitendra Kumar Biswal. Scientist. ICAR-Directorate of Foot-and-mouth disease, Mukteswar, India. Need to study FMDV persistence in endemic settings. Better understanding of FMDV natural ecology for development of effective control strategies..