Harbin of China News Service on July 19 report (Wang Shu of reporter Wang Xiaodan) H7N9 virus is right birds kind without the force that cause disease, but after this virus invades mutation of human body happening, its send ill force and transmission capacity to increase apparently, make H7N9 virus acquires the efficient transmission capacity between person and person possibly thereby.
Afore-mentioned conclusion by it is group of scientific resnorton internet antivirusearch of Chen Hualan of institute of vetbrass faucet aerator of Harbin of Chinese agriculture academy of sciences, reach after the power causing disease that used fowl andfree watch case mammalian system to evaluate the H7N9 virus that departs from inside birds body and human body and transmission capacity. The thesis researchs 18 days related online publish at the United States " science (SCIENCE) " on the magazine.
watch caseThis year since Feburary, chinese inland reports in all case of illnesthe most popular watch casess of 132 H7N9 diagnose, among them 43 people die. H7N9 virus never is before this in person or animal detect, so its occurrence caused a series of scientific questions about character of this flu virus and attention of communal to the mankind healthful height. Among them focus problem is this virus whether effective transmissthe most popular north face shirtsion produces between person and person.
The researcher compares discovery through complete gene alignment, the H7N9 virus that departs from inside birds body and the group of H7N9 virus gene that depart from inside human body are the same as a source highly, only the difference that brass faucetis less than 30 amino acid. All virus that depart from inside birds body and human body have couple person respiratory tract is epithelial the afree modern dining chairsbility —— that accepts put oneself in another's position the main reason that this is person of H7N9 virus easy infection.
Researcher discovery, mix to chicken, duck from the detached H7N9 virus inside birds body small rat does not have the sex tvancouver to harrison hot springshat cause disease, but can cause small rat to come on badly from the detached H7N9 virus inside human body, weight drops more than 30% , die even. Because H7N9 separate individual plant duplicates in human body,this is gene mutation happened in the process. The transmission capacity that the researcher still used mammalian ferret to test virus of detached virus of birds body H7N9 and depart of human body H7N9, the result also shows detached virus is in human body the duplicate capability in ferret is apparently strong Yu Qin body. The researcher still transmits a test through respiratory tract flying foam, reach the H7N9 virus of human body but classics flying foam is efficient in ferret transmission.
Chen Hualan explanation says, hnorth face shirts7N9 virus is right birds kind without the sex that cause disease, make it is in birds kind in exist and be discovered not easily, increased H7N9 to virus catchs a person and produce the opportunity of more gene mutation, make H7N9 virus acquires the efficient transmission capacity between person and person the best selling modern dining chairspossibly thereby. (Be over)
(Chinese news network)
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