Virus ascribed to mingling of genes among birds
April 11, 2013, Thursday
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Print Edition
A Chinese laboratory has ascribed the H7N9 virus to genetic reassortment of wild birds from east Asia and chickens from east China.
Tests had ruled out pigs as intermediate hosts, the Chinese Academy of Sciences' Key Laboratory of Pathogenic Microbiology and Immunology said yesterday.
Researchers said the genetic reassortment is likely to have occurred when a virus carried by wild birds from South Korea and other east Asian regions mingled with the virus carried by ducks and chickens in the Yangtze River Delta during migration.
Research showed the H7 and N9 gene segments in H7N9 are similar to those in samples collected from the wild birds, while another six genes are traceable to chickens in Shanghai and neighboring Zhejiang and Jiangsu provinves.
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