Pathfinder
Editor, Senior Moderator
#HEALTH NEWSOCTOBER 19, 2017 / 11:07 AM / UPDATED 2 HOURS AGO
New H7N9 bird flu strain in China has pandemic potential: study
Julie Steenhuysen
CHICAGO (Reuters) - Lab experiments on a new strain of the H7N9 bird flu circulating in China suggest the virus can transmit easily among animals and can cause lethal disease, raising alarms that the virus has the potential for triggering a global human pandemic, researchers reported on Thursday.
The H7N9 virus has been circulating in China since 2013, causing severe disease in people exposed to infected poultry. Last year, however, human cases spiked, and the virus split into two distinct strains that are so different they no longer succumb to existing vaccines.
One of these has also become highly pathogenic, meaning it has gained the ability to kill infected birds, posing a threat to agriculture markets.
...
In the study published in Cell Host & Microbe, flu expert Yoshihiro Kawaoka of the University of Wisconsin and colleagues tested a version of the new H7N9 strain taken from a person who died from their infection last spring.
They found that the virus replicated efficiently in mice, ferrets and non-human primates, and that it caused even more severe disease in mice and ferrets than a low pathogenic version of the same virus that does not cause illness in birds.
...
https://www.reuters.com/article/us-...na-has-pandemic-potential-study-idUSKBN1CO2DD
New H7N9 bird flu strain in China has pandemic potential: study
Julie Steenhuysen
CHICAGO (Reuters) - Lab experiments on a new strain of the H7N9 bird flu circulating in China suggest the virus can transmit easily among animals and can cause lethal disease, raising alarms that the virus has the potential for triggering a global human pandemic, researchers reported on Thursday.
The H7N9 virus has been circulating in China since 2013, causing severe disease in people exposed to infected poultry. Last year, however, human cases spiked, and the virus split into two distinct strains that are so different they no longer succumb to existing vaccines.
One of these has also become highly pathogenic, meaning it has gained the ability to kill infected birds, posing a threat to agriculture markets.
...
In the study published in Cell Host & Microbe, flu expert Yoshihiro Kawaoka of the University of Wisconsin and colleagues tested a version of the new H7N9 strain taken from a person who died from their infection last spring.
They found that the virus replicated efficiently in mice, ferrets and non-human primates, and that it caused even more severe disease in mice and ferrets than a low pathogenic version of the same virus that does not cause illness in birds.
...
https://www.reuters.com/article/us-...na-has-pandemic-potential-study-idUSKBN1CO2DD