File:Influenza virus particle color.jpg

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Original file(1,663 × 1,423 pixels, file size: 205 KB, MIME type: image/jpeg)
Description
English: This (Pseudocolored) negative-stained (false-colored) transmission electron micrograph (TEM) depicts the ultrastructural details of an influenza virus particle, or “virion”. A member of the taxonomic family Orthomyxoviridae, the influenza virus is a single-stranded RNA organism

The flu is a contagious respiratory illness caused by influenza viruses. It can cause mild to severe illness, and at times can lead to death. The best way to prevent this illness is by getting a flu vaccination each fall.

Every year in the United States, on average:

- 5% to 20% of the population gets the flu

- more than 200,000 people are hospitalized from flu complications, and

- about 36,000 people die from flu. Some people, such as older people, young children, and people with certain health conditions, are at high risk for serious flu complications. See PHIL 10073 for a colorized version of this image.

Influenza A and B are the two types of influenza viruses that cause epidemic human disease. Influenza A viruses are further categorized into subtypes on the basis of two surface antigens: hemagglutinin and neuraminidase. Influenza B viruses are not categorized into subtypes. Since 1977, influenza A (H1N1) viruses, influenza A (H3N2) viruses, and influenza B viruses have been in global circulation. In 2001, influenza A (H1N2) viruses that probably emerged after genetic reassortment between human A (H3N2) and A (H1N1) viruses began circulating widely. Both influenza A and B viruses are further separated into groups on the basis of antigenic characteristics. New influenza virus variants result from frequent antigenic change (i.e., antigenic drift) resulting from point mutations that occur during viral replication. Influenza B viruses undergo antigenic drift less rapidly than influenza A viruses.
Deutsch: Ein behülltes Virus aus der Gattung Influenzavirus in einer TEM-Aufnahme: Acht helikale Kapside werden von einer Virushülle umschlossen (Partikel ca. 80−120 nm im Durchmesser).
Français : Virus de la grippe en microscopie électronique.
Čeština: Virus chřipky pod elektronovým mikroskopem - na povrchu je patrná neuraminidáza a hemaglutinin.
Српски / srpski: Вирус грипа - велико увећање.
Date
Source
US CDC logo.svg
This media comes from the Centers for Disease Control and Prevention's Public Health Image Library (PHIL), with identification number #10073. Note: Not all PHIL images are public domain; be sure to check copyright status and credit authors and content providers.

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Author
  • Photo Credit: Cynthia Goldsmith
  • Content Providers(s): CDC/ Dr. Erskine. L. Palmer; Dr. M. L. Martin
Permission
(Reusing this file)
PD-USGov-HHS-CDC
English: 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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Licensing[edit]

Public domain
This image is a work of the Centers for Disease Control and Prevention, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain.

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Date/TimeThumbnailDimensionsUserComment
current23:55, 17 May 2008Thumbnail for version as of 23:55, 17 May 20081,663 × 1,423 (205 KB)Optigan13 (talk | contribs)False color version, see PHIL#10073, 8430
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