The World Health Organization called on all countries to monitor closely outbreaks of deadly avian influenza in birds and poultry and to report promptly any human cases that could signal the start of a flu pandemic.

WHO | Avian and other zoonotic influenza

An influenza A H7N9 virus as viewed through an electron microscope. Both filaments and spheres are observed in these photos.

Circulating Avian Influenza Viruses Closely Related to the 1918 Virus Have Pandemic Potential

H5N1 avian influenza virus. This subtype of avian influenza (bird flu) is a viral pathogen that causes a deadly disease in bird populations. Bird flu has killed large populations of birds in Southeast Asia and is spreading rapidly worldwide. It can spread to humans through close contact with infected birds or their feces. There are no known cases of infection via human to human contact at this time. Concerns are that this subtype might mutate and turn in to a human influenza subtype that…

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SG5461:H5N1 avian influenza virus particle, TEM ©NIBSC/Science Source #science #virus #influenza #h5n1 #flu #avianinfluenza #heart #valentinesday http://images.sciencesource.com/preview/11818375/SG5461.html

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