Health officials concerned that deadly bird flu could soon pass easily between humans

ChinaFotoPress/Getty Images

Health officials concerned that deadly bird flu could soon pass easily between humans
(Image credit: ChinaFotoPress/Getty Images)

All it would take is five gene mutations of the H5N1 avian influenza virus to potentially create havoc on a global scale. Dutch researchers are reporting that if those mutations happen, the virus would become transmissible via coughing or sneezing, just like regular flu viruses. Currently, most cases of H5N1 arise after a person has had contact with sick or dead infected poultry.

To give an idea of how deadly the avian flu virus is, scientists at one point stopped conducting research on H5N1 over concerns that in the wrong hands it could be used as a biological weapon by terrorists. Of the 650 people infected since H5N1 was first identified in Hong Kong 17 years ago, 60 percent died because of the disease.

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During the study, which was published Thursday in the journal Cell, researchers used ferrets as stand-ins for humans. They sprayed an altered version of the H5N1 virus into a ferret's nose, then put it in a special cage with a ferret who had not been exposed. The cage was constructed to allow shared airflow without direct contact, and when the healthy ferret exhibited signs of the flu (loss of appetite and energy, ruffled fur) they knew the virus had spread through the air. Read more about the study and its findings at the Los Angeles Times.

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Catherine Garcia, The Week US

Catherine Garcia has worked as a senior writer at The Week since 2014. Her writing and reporting have appeared in Entertainment Weekly, The New York Times, Wirecutter, NBC News and "The Book of Jezebel," among others. She's a graduate of the University of Redlands and the Columbia University Graduate School of Journalism.