Ironically, after years of concern about H5N1 bird flu, the new flu causing concern is a pig virus, of a family known as H1N1.
具有讽刺意味的是，就在人们开始关注H5N1禽流感病毒若干年以后，进一步引起人们焦虑的病毒竟然是一种属于H1N1家族的猪病毒。
Any new flu carries the risk of gene-swapping that can form mutant viruses, and this one has some swine and avian genes that, before this April, had never been seen in humans.
任何新流感都有基因转换从而产生变异病毒的危险，而这次的病毒包含有部分猪流感和禽流感的基因，在今年4月之前从未在人身上发现过。
M2 also appears in abundance in the membrane of cells producing new flu viruses, so targeting it with antibodies will lead to the destruction of infected cells as well as the virus itself.
M2也分布在合成新的流感病毒的细胞的细胞膜上，因此针对它的抗体会导致受感染的细胞以及病毒本身被消灭。
More than 40 people have been sickened by the new flu strain in the United States.
在美国超过40人感染了这种新的流感病毒。
There is a new flu virus going around. It initially looked quite lethal, and caused panic.
有种新型流感病毒出现了，一开始人们以为它是致命的，并引起了恐慌。
In the effort to control influenza epidemics, scientists try to identify, as quickly as possible, new flu viruses.
为了努力控制流行感冒，科学家试图尽快识别新的流感病毒。
And the new flu is making an impact on these trends. Already, 2.6% of doctor visits are for flu-like illness, above the national baseline.
新型的流感影响这些动态，目前2.6%的门诊患者是流感样疾病，这一数字高于国家的标准线。
Mexican authorities have closed schools and public buildings in the capital in a bid to contain a new flu virus suspected of killing up to 60 people.
墨西哥当局下令关闭首都的学校和公共建筑以防止一种新型感冒病毒的传播，据悉该病毒可能已经导致60人致死。
New flu vaccines need to be made each season because the viruses are constantly changing so as to avoid attack by host immune defences - whether in birds, humans or other animals.
每个季度都要制造新的流感疫苗是因为流感病毒会不断地变化从而逃避宿主(无论是人类、鸟类还是其他动物)免疫防线的攻击。
New flu vaccines need to be made each season because the viruses are constantly changing so as to avoid attack by host immune defences - whether in birds, humans or other animals.
每个季度都要制造新的流感疫苗是因为流感病毒会不断地变化从而逃避宿主(无论是人类、鸟类还是其他动物)免疫防线的攻击。
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