请专家看看这个

demos

三、被针扎从来没有过感染的病例
而且美国那些版主也认为这不可能
他们说什么皮肤底下没有那种特殊的细胞，而hiv必须感染那些特殊的细胞
而这些细胞大量存在于肛门和子宫颈液和包皮下，我想血液里也应该存在。可他们说要扎到静脉里，我英文不是很好，因此只能说结果了，结果是不可能感染的。
在medhelp上的医生所回答的并不是这些地方有特殊细胞，这里存在理解和翻译的问题，医生说的是患有性病的人在患病部位会有大量的淋巴细胞出现，而这也是为什么有性病的人更容易感染的原因，并不是说这些特殊细胞会集中在什么地方。
以下是原文：With regard to cells, I think what you read may have been mis-interpreted or taken out of context.  At one point I did indicate to a client that the reason that superficial wounds caused by STDs such as syphilis and HSV were more likely to be associated with infection than scrapes, etc is because when person have these infections, as the person with syphilis or HSV "fights" the infection, lymphocytes, which are the target cells for HIV, tend to concentrate in the ulcerations, explaining why these sorts of sores are more strongly associated with HIV than scrapes, etc.
如果我没有翻译错或是理解错的话，应该是这样。