Avian influenza virus, TEM C016 / 5843
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Avian influenza virus, TEM C016 / 5843
Avian influenza virus, type A strain H7N9, coloured transmission electron micrograph (TEM). This virus first emerged in the human population in China, in March 2013. The virus consists of ribonucleic acid (RNA), surrounded by a nucleocapsid and a lipid envelope (purple). In the envelope are two types of protein spike, haemagglutinin (H) and neuraminidase (N), which determine the strain of virus. The natural hosts of this virus are wild birds. Unusually, infected domestic chickens do not show symptoms, which increases the potential for spread to humans that have contact with chickens. Nearly a third of human infections are proving to be fatal. As of July 2013 no human to human transmission has been recorded. Magnification: x82, 000 when printed at 10 centimetres wide
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Media ID 9206901
© CENTRE FOR INFECTIONS/PUBLIC HEALTH ENGLAND/SCIENCE PHOTO LIBRARY
2013 Antigen Avian Bird Bird Flu Capsid China Envelope Enveloped Haemagglutinin Hemagglutinin Influenza A H7n9 Lipid Microbiology Microscope Negatively Stained Neuraminidase Nucleocapsid Orthomyxoviridae Orthomyxovirus Particle Pathogenic Pathological Pathology Polymorphic Ribonucleic Acid Rna Virus Segmented Genome Serotype Strain Transmission Electron Transmission Electron Micrograph Type A Viral Virion Virological Virology Microbiological Pathogen Protein Virus
EDITORS COMMENTS
This print showcases the Avian influenza virus, type A strain H7N9, captured through a coloured transmission electron micrograph (TEM). The emergence of this virus in the human population dates back to March 2013 in China. The image reveals the intricate structure of the virus, consisting of ribonucleic acid (RNA) surrounded by a nucleocapsid and a lipid envelope colored in purple. Within this envelope lie two types of protein spikes known as haemagglutinin (H) and neuraminidase (N), which play a crucial role in determining the strain of the virus. Interestingly, infected domestic chickens do not display any symptoms, making it easier for humans who come into contact with them to contract the virus. Unfortunately, nearly one-third of human infections have proven to be fatal. As of July 2013, no instances of human-to-human transmission have been recorded. It is worth noting that wild birds serve as natural hosts for this particular avian influenza virus. This high-resolution image magnified at x82,000 when printed at 10 centimeters wide provides valuable insights into its biological composition and pathogenic potential. The photograph originates from Public Health England's Centre for Infections and Science Photo Library. Its inclusion within scientific research contributes significantly to our understanding of virology and pathology associated with avian flu strains like H7N9.
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