PPT-Human Infection with Avian Influenza A(H7N9) Virus: Situation and Response, China

Zijian FENG Center for Public Health Emergency Center Chinese Center for Disease Control and Prevention Overview of human H7N9 cases reported in Mainland China One confirmed case was reported in Taiwan. in State of Osun. TABLE OF CONTENTS. Title Page. Table of contents. Brief Introduction of Avian Influenza. Background and History of Avian Influenza in Nigeria. Pre-disposing factors . Mode of Transmission/Symptoms. WHO/HSE. Tanzania. February 01, 2017. An overview and an Update on Tanzania. Influenza viruses . - Classification. Influenza viruses belong to the . orthomyxovirus. . family, . which has the genera. What influenza virus does when it infects and lessons from past & present. S. Mark Tompkins, PhD. Center for Vaccines and Immunology. Department of Infectious Diseases. March 20, 2017. 1. Linda M. . By . Brenton. Madison, Jesse Richmond, Sydney Towns. Description. Avian Influenza is caused by birds. The virus can be mutated and could possibly spread to humans.. Type of Disease.   Medical name- Avian Influenza. (89 cases, . 340 . controls). Transmission route of H7N9 virus: avian to human. 70% of cases had contact with poultry or related environment before illness onset. Viruses isolated from human cases shared high homology with the viruses isolated from live market with epidemiological link. Date : 23 \3\2012. Presentation By :- Dr. . Eman. . Diab. introduction. Introduction . AVI is a highly contagious viral disease with up to 100 percent mortality in domestic fowl. . Caused by influenza A virus subtypes H5, H9 and H7. . 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. 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. Which Avian Influenza Viruses are of Particular Interest to Health Officials and Clinicians and Why? Where is Avian Influenza Found?Can Avian Influenza Virus be Transmitted Person to Person?How and W 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. Quan C, Wang Q, Zhang J, Zhao M, Dai Q, Huang T, et al. Avian Influenza A Viruses among Occupationally Exposed Populations, China, 2014–2016. Emerg Infect Dis. 2019;25(12):2215-2225. https://doi.org/10.3201/eid2512.190261. 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.. Li Y, Liu L, Zhang Y, Duan Z, Tian G, Zeng X, et al. New Avian Influenza Virus (H5N1) in Wild Birds, Qinghai, China. Emerg Infect Dis. 2011;17(2):265-267. https://doi.org/10.3201/eid1702.100732. Xu C, Havers F, Wang L, Chen T, Shi J, Wang D, et al. Monitoring Avian Influenza A(H7N9) Virus through National Influenza-like Illness Surveillance, China. Emerg Infect Dis. 2013;19(8):1289-1292. https://doi.org/10.3201/eid1908.130662.