在特定社群，由于人口很容易感染H5N 1一类病毒，发病率会很迅速地达到最高点。
Because populations will be fully susceptible to an H5N1-like virus, rates of illness could peak fairly rapidly within a given community.
一份与8月23日发表的研究将CFS和一类病毒联系起来，并认为该病毒在该症中起到关键作用，这类病毒被称为逆转录酶病毒( 译者：一种致肿瘤病毒)（这是第二个发现这个结果的研究）。
A study published Aug. 23 linked CFS to a class of viruses known as retroviruses (it is the second study to find that result), suggesting that retroviruses may play a key role in curing the disease.
因为这是这一类病毒中的首例，很自然地他引起了反病毒厂商的注意。
As the first of its kind, it naturally attracted the attention of antivirus companies.
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