THE human immunodeficiency virus, HIV-1, the cause of the global AIDS epidemic, is the most intensively studied pathogen in history.

引起艾滋病全球性传播的人体免疫缺陷病毒（HIV-1），一直被人们最为集中的研究其病原体。

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The HIV-1 virus, seen here, is the most common (and deadliest) strain of the disease.

这里所看到的HIV - 1病毒是最常见和最致命的疾病菌株。

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Unlike the widespread HIV-1 M strain, and the much rarer N and O strains, which jumped to people from chimpanzees, the newly described P strain originated in gorillas.

与传播广泛的HIV-1 M株、以及更罕见的从人类转移至黑猩猩的N和O株不同的是，这一新发现的P株源自大猩猩。

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Dr.Oduor says in reality, only 1.3 percent of the blood collected is found to be HIV-positive.

VOA: standard.2010.06.04

Last year,he says nearly 1.5-million TB patients were tested for HIV, an increase of 200,000.

VOA: standard.2009.12.09

What sets Portland, Oregon-based CytoDyn (CYDY) apart from the pack is its pipeline of three ground-breaking therapies, PRO 140 and Cytolin entry-inhibitor antibodies for R5 HIV-1 (the most common, most virulent strain of HIV worldwide).

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"We know HIV-1 comes from chimpanzees but we know little beyond this, " he said.

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Only occasionally, as with the M strain of HIV-1, does the chatter lead to a serious epidemic.

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