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but also may be weak or may become strong, there is no way to predict where to developing it." Hejian Kui said. If it's evolution at an alarming rate, the number of days or a few weeks will be a face-lift, it is very scary. If the evolution rate much higher than the rate of human viral vaccine or drug development, regardless of where one round of competition.
chicken, pig's body, have isolated H9N2 ; many veterinarians blood, and can also detect H9N2 antibodies. Microbiology Immunology Laboratory studies also show that with the Chinese Academy of pathogens, genetic reassortment takes place probably in China's Yangtze River Delta region. The laboratory studies showed that eight gene segments of H7N9 avian influenza virus, H7 fragment isolated from Zhejiang ducks bird flu virus, the virus Zhejiang ducks up retrospective, separated from wild birds in poultry in Korea homologous influenza virus; N9 fragment homologous avian influenza virus isolated in wild birds and Korea; the remaining 6 gene from H9N2 avian influenza virus. According to the viral genome alignments and phylogenetic analysis show, H9N2 avian influenza virus from Shanghai, Zhejiang, Jiangsu and flocks. According to media reports, the virus may be in the natural migration of wild birds via Korean process, and ducks China Yangtze River Delta region, with its own bird flu virus in chickens were produced genetic reassortment, called "Korean mixed." Wenjun,louboutin soldes, deputy director of the laboratory, said: "This statement is not clear, we need further research and media reports confirmed H7N9 virus is Korean mixed argument unscientific, because migratory birds without nationality, can not be said to be a bird which country. " Hejian Kui said their findings and conclusions of the study by the Institute of Microbiology of basically the same, slightly different. "Microbiology think N9 bird family from Korea.
Humans H7N9 is a new desk, desktop, and four legs are taking reassembled from somewhere else, not an old table repair repair patch made of. " "Family is what does that mean? Such as H7 family there H7NX, X does not know specifically what might be 1 or 3, is still unable to conclude that more data is needed to accurately determine it. These three viruses are birds found in the body, including H9N2 and H7 virus from the poultry family, N9 family of viruses from wild birds, they completed a restructuring in poultry. " said," This occurred in 2009 (H1N1) influenza viruses, H1N1 is by human influenza.
our study suggests that family can not be determined from Korea or N9 Jiangsu and Zhejiang provinces own wild birds, which there is not enough evidence to determine if a few more gene sequences from a patient, we quickly identified. "In fact, in 2011 Korea, in 2010 China's Jiangsu, in 2005 the Czech Republic have all been found H11N9 avian influenza virus. University of Edinburgh study viral evolution expert Andrew Lang Fort (AndrewRambaut) tend to think N9 family from Jiangsu and Zhejiang as well as Czech local birds. Whither virus changed? "Influenza virus mutates is both infectious and infectious are likely to change.
swine flu and bird flu virus recombinant form, and H7N9 each component is all from the birds. " April 12, "New England Journal of Medicine" published an article entitled "one kind from avian influenza virus new human infection," the paper, the paper's co-corresponding author of Fudan University Shanghai Medical College Professor Yuan Zhenghong and China CDC researcher Shu Yuelong. They isolated three H7N9 samples, sequence analysis, there are six internal genes obtained from the H9N2 avian influenza virus, this conclusion is consistent with the conclusions of . He Jiankui by sequence alignment and other studies have found that with the new H7N9 avian influenza virus closest viral poultry and wild birds in Jiangsu and Zhejiang, and the location of human infection coincidence, "especially in East Asia, H9N2 has spread for years, so we speculated that this gene recombination sites may in Jiangsu and Zhejiang provinces. " He said. Earlier, the former director of the National Influenza Center Guo Yuanji had found H9N2 bird flu virus can infect humans and cause human cases; H9N2 easily with people of receptor binding in the human.
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发表于 2015-8-7 04:45:17
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