<p> mainly the distribution of -2,pandora pas cher,6 sialic acid receptor type, known as man-sialic acid receptors. Influenza virus surface called hemagglutinin (HA) protein of influenza virus tends to determine the type of binding which sialic acid receptor. Scientists after comparing different subtypes of influenza virus HA sequences found, HA protein of some kinds of amino acids at key sites determines its specificity for sialic acid receptor binding. In general,barbour paris, the human influenza virus priority to recognize human type sialic acid receptor, and the avian flu virus is a priority to identify avian-type sialic acid receptors. Under normal circumstances, the bird flu virus does not come into contact with the human body. However,nike air max, in some cases, such as human and avian relatively long-term close contact, such that the avian influenza virus has the opportunity to come into contact with people,air jordan, and it is possible to repeatedly spread between birds and people with each other. In this case.</p>
<p> are not an exception occurs. Eight gene segments H7N9 virus is also no human influenza gene fragments. Therefore,air jordan shop, it is yet to see clear evidence of human to human transmission. According to Guan's statement, the factors affecting the virus in interpersonal communication, there are three: 1 receptor; 2, subtypes, H1,giuseppe zanotti homme, H2, H3 three subtypes of influenza virus in humans can spread,hogan outlet online, H5, H7,giuseppe zanotti paris, H9 only occasionally infects humans,moncler italia, temporarily unable to spread in the human body; 3, the degree of matching internal genes,hollister milano, internal genes of the virus in the human body and some reproductive efficiency is not high, it is not spread open, some viruses in the human body is very high reproductive efficiency,nike scarpe running, ability to communicate will be strong,abercrombie and fitch pas cher, unfortunately, the scientific community too little understanding of H7N9,barbour, it's kind of what happened gene variation need further studies. No one knows the future will not be H7N9 virus mutation, variation in what time.</p>
<p> the bird flu virus may be some mutations cause HA key sites kinds of amino acids to change, so that the bird flu virus HA protein can bind to human sialic acid receptor type, so the bird flu virus is likely to infect humans airway epithelial cells. This process makes the avian influenza virus to adapt to the new host to obtain a mutation, of course, these mutations may not only include the changes in the HA protein amino acid. In addition,2014 Scarpe Hogan, the presence of porcine respiratory and poultry while man-type sialic acid receptor,hogan online, so human-type flu virus and avian influenza virus can infect pigs and are likely to occur in pigs in vivo recombination,piumino moncler, so it is possible restructuring process making the original virus only infected birds to humans. (Freelance writer _ Yu Tao / virology researcher) Q: H7N9 virus from person to person spread it? # Person to person # A: No evidence of human to human transmission. And more than 600 people in close contact with bird flu.</p>
<p> it becomes possible to spread between people. But it is worth noting that found nine amino acids on the surface of the gene mutation in the new virus HA. This shows that new H7N9 avian influenza virus has a strong ability to mutate. Since the surface of HA gene is used to adsorb viruses infect animal cells, which may lead to high variability of changes in its ability to infect and spread of disease-causing ability. (Reporter _ Xuzhuo Jun) Q: H7N9 virus vaccine it? State Drug Administration recently approved a new drugs peramivir food, it can effectively control it? Peramivir # # # # # zanamivir Duffy # A: No vaccine, Tamiflu is recognized as one of the most effective drug treatment of avian flu, and clinical trial data to prove its peramivir influenza A (H7N9 subtype of influenza A virus belongs) influenza effectively. World Health Organization and other cooperating agencies have been separate and identify H7N9 virus, in order to determine the best production of the vaccine candidate viruses. This is the first step into vaccines. However, according to current progress, vaccine development have at least 6-8 months,moncler homme paris, so the new vaccine is not so fast out. April 5, 2013,chaussure tn pas cher, China's State Food and Drug Administration of approved anti-influenza drugs, peramivir (Peramivir) sodium chloride injection. This mechanism of action of drugs is to inhibit influenza viral neuraminidase surface (NA).</p>
相关的主题文章：
- http://qwmxbbs.dj-game.cn/discuzX/home.php?mod=space&uid=83101
- http://cand.qee.jp/link_p/apeboard_plus.cgi?command=viewres&target/
- http://113.codeku.cn/bbs/home.php?mod=space&uid=1395
- http://kaito1412.com/kid/bbs/apeboard_plus.cgi?command=viewres&target=801162/
- http://pp.papaxiong.net/home.php?mod=space&uid=77367&do=blog&quickforward=1&id=11551906
- http://bbs.shuju.it/home.php?mod=space&uid=5426
- http://hgsdream.com/phpwind/apps.php?q=diary&a=detail&did=108637&uid=6815
- http://kujiraduki.fakefur.jp/p-nikki/apeboard_plus.cgi/