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11214

PHIL Image 11214

ID#:11214
Description:This colorized negative stained transmission electron micrograph (TEM) depicted some of the ultrastructural morphology of the A/CA/4/09 swine flu virus. See PHIL 11212 for a black and white version of this image.

What is Swine Influenza?

Swine Influenza (swine flu) is a respiratory disease of pigs caused by type A influenza virus that regularly causes outbreaks of influenza in pigs. Swine flu viruses cause high levels of illness and low death rates in pigs. Swine influenza viruses may circulate among swine throughout the year, but most outbreaks occur during the late fall and winter months similar to outbreaks in humans. The classical swine flu virus (an influenza type A H1N1 virus) was first isolated from a pig in 1930.

Can humans catch swine flu?

Swine flu viruses do not normally infect humans. However, sporadic human infections with swine flu have occurred. Most commonly, these cases occur in persons with direct exposure to pigs (e.g. children near pigs at a fair or workers in the swine industry). In addition, there have been documented cases of one person spreading swine flu to others. For example, an outbreak of apparent swine flu infection in pigs in Wisconsin in 1988 resulted in multiple human infections, and, although no community outbreak resulted, there was antibody evidence of virus transmission from the patient to health care workers who had close contact with the patient.

High Resolution:Right click here and select "Save Target As..." for hi-resolution image (11.45 MB)
Content Providers(s):CDC/ C. S. Goldsmith and A. Balish
Creation Date:2009
Photo Credit:C. S. Goldsmith and A. Balish
Links:
  • CDC - Morbidity and Mortality Weekly Report, MMWR, Dispatch: ”Update: Swine Influenza A (H1N1) Infections --- California and Texas, April 2009”
  • CDC - Swine Influenza (Flu)
    Categories:
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    tree picture Organization – 2004 – present
    tree picture tree picture Coordinating Center for Infectious Diseases
    tree picturetree picture tree picture National Center for Infectious Diseases
    tree picturetree picturetree picture tree picture Division of Viral and Rickettsial Diseases

    MeSH
    tree picture Analytical, Diagnostic and Therapeutic Techniques and Equipment
    tree picture tree picture Diagnosis
    tree picturetree picture tree picture Diagnostic Techniques and Procedures
    tree picturetree picturetree picture tree picture Diagnostic Imaging
    tree picturetree picturetree picturetree picture tree picture Microscopy, Electron
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    tree picturetree picturetree picture tree picture Microscopy, Electron
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    tree picturetree picture tree picture RNA Viruses
    tree picturetree picturetree picture tree picture Orthomyxoviridae
    tree picturetree picturetree picturetree picture tree picture Influenzavirus A
    tree picturetree picturetree picturetree picturetree picture tree picture Influenza A virus
    tree picturetree picture tree picture Vertebrate Viruses
    tree picturetree picturetree picture tree picture RNA Viruses
    tree picturetree picturetree picturetree picture tree picture Orthomyxoviridae
    tree picturetree picturetree picturetree picturetree picture tree picture Influenzavirus A
    tree picturetree picturetree picturetree picturetree picturetree picture tree picture Influenza A virus
    Copyright Restrictions:None - This image is in the public domain and thus free of any copyright restrictions. As a matter of courtesy we request that the content provider be credited and notified in any public or private usage of this image.
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