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ID#:15674
Description:Under a high magnification, this negatively-stained transmission electron microscopic (TEM) image captured some of the ultrastructural details exhibited by the new influenza A (H7N9) virus.
On April 1, 2013, the World Health Organization (WHO) first reported 3 human infections with a new influenza A (H7N9) virus in China. Since then, additional cases have been reported. Most reported cases have severe respiratory illness and, in some cases, have died. At this time, no cases of H7N9 outside of China have been reported. The new H7N9 virus has not been detected in people or birds in the United States.

This new H7N9 virus is an avian (bird) influenza (flu) virus. Human infections with avian influenza (AI, or “bird flu”) are rare but have occurred in the past, most commonly after exposure to infected poultry. However, this is the first time that this bird flu subtype (H7N9) has been found in people. This virus is very different from other H7N9 viruses previously found in birds.

High Resolution: Click here for hi-resolution image (5.79 MB)
Content Providers(s):CDC/ Cynthia S. Goldsmith and Thomas Rowe
Creation Date:2013
Photo Credit:Cynthia S. Goldsmith and Thomas Rowe
Links:CDC - National Center for Immunization and Respiratory Diseases (NCIRD); Influenza (Flu): Images of Avian Influenza A H7N9
CDC - National Center for Immunization and Respiratory Diseases (NCIRD); Seasonal Influenza (Flu): Avian Influenza A (H7N9) Virus
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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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