你英文有问题啊，我翻译给你听；并不是3种情况都具备
HIV is transmitted through oral sex infrequently; HIV通过口交传染很少见
Transmission usually occurs from the insertive to the partner; and但是传染通常发生从被动方到主动方
The risk of HIV transmission during oral sex increases if:在下面3种情况下（意思是任有一种）口交传染HIV的几率很增大
- The insertive partner has a high viral load;（1）被动方的病毒量很高（HIV急性期病人）
- Ejaculation into the mouth occurs; （2）射精在嘴里。
- The receptive partner’s mouth is breached in some way allowing HIV to enter （3）主动方的嘴巴破损
注意：并不是3条情况同时具备才有可能造成感染。
而是。本身存在风险，有下面3条情况的任意一种或者几种感染的风险会增大
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