oral sex（fallatio）吸吮阴茎主动口交是不会被感染的

杰生

So that, would it be fair to say, then, it sounds like--sort of summarizing from everyone--that transmission by oral sex/fellatio with ejaculation, being the receptive partner, transmission is biologically plausible. We believe it occurs based on case evidence. It's a relatively rare event. It's somewhat difficult to estimate the exact per contact risk because of the imprecision of the estimates, both because of what people report and because of just the imprecise nature of what's trying to be estimated, and because oral sex gets confounded with other kinds of activities that people engage in.
上文大意：
通过吸吮阴茎且口内射精，对于口腔方而言，从生物学角度讲是有可能的。不过，所有声称经口感染的研究报告都是个案报告（注：个案报告极度稀有，且存在明显的心理学偏差：例如记忆错误，或者迫于社会压力而有意或无意识欺瞒）。口交感染艾滋病的概率极难估计，但所有专家均一致认为即使可能，也是极其微小的，不值得为此担心。