" H7" and " N9" refer to particular types of two proteins, haemagglutinin and neuraminidase, that help influenza viruses invade host cells.

“H7”和“N9”是指两种蛋白质，和神经氨酸苷酶，这两种成分使得流感毒可以入侵宿主身体细胞。

Mutations cause minute changes in the hemagglutinin, H, and neuraminidase, N, antigens on the virus's surface.

突变导致毒表面（H）和神经氨酸酶（N）抗原发生微小变化。

And type A's can be divided into further sub-categories, depending on the subtypes of two proteins present on their surface: hemagglutinin, 'H', and neuraminidase, 'N'.

A流感毒还可以进一步细分，取决于其表面存在的两种蛋白质的亚：(H)和神经氨酸苷酶(N)。

Since 2009, a favorite of the US and UK has been a class of drugs known as neurominidase inhibitors, or NAIs.

自2009年以来，美国和英国一直偏爱一类被称为神经氨酸酶抑制剂（NAIs）的药物。

Antibodies for the flu are primarily directed against the two proteins on the surface of the influenza virus, hemagglutinin (H) and neuraminidase (N).

流感抗体主要针对流感毒表面的两种蛋白质，（H）和神经氨酸酶（N）。

Sold under the names Tamiflu and Rolenza, these drugs have been said to work by blocking the protein neuraminidase that viruses use to escape their host cells.

这些药物以 Tamiflu 和 Rolenza 的名称出售，据说通过阻断毒用来逃逸宿主细胞的蛋白质神经氨酸酶起作用。

After reviewing 46 studies performed on 24,000 people who have taken Tamiflu or Ralenza, a medical nonprofit known as the Cochrane Collaboration found that NAIs don't reduce the risk that you'll catch the flu.

经过审查了针对24,000名服用过达菲或乐感清的人进行的46项研究后， 一个名为科克伦协作网的医学非营利组织发现， 神经氨酸酶抑制剂并不能降低你感染流感的风险。

Since the study came out, officials have defended their decisions by saying that NAIs were better than nothing at all, which may in fact be true, but transparent science would have been a lot better.

自从研究公布以来，官员们一直在为自己辩护， 称神经氨酸酶抑制剂总比什么都没有好， 这或许是真的， 但透明的科学研究会更好。