I think that it's grossly overstated that one needs to have contact with the opposite sex right through the whole of life, in the classroom and outside the classroom and at all ages.

我认为，所谓的一个人需要在一生中保持与异性的接触——无论是课堂上还是课堂外，无论处于哪个年龄段——这种观点过分夸大了。

youdao

The key populations as defined by the study are the people who are mainly drug injectors, men who have sex with men, and sex workers.

VOA: standard.2010.07.07

I mean,I think that knowing how HIV basically gets transmitted is something that people are afraid, that people know that they have had extra-marital sex-the whole concept of men who have sex with other men-- it's a big taboo, and the region does not want to admit that we have these groups.

VOA: standard.2010.07.07

Others say some women may have had sex with infected men who had very high amounts of the virus.

VOA: special.2010.07.21

Men want someone who will take care of them, make them look good, and have sex with them not necessarily in that order.

NEWYORKER: Looking for Someone

Men who have had sex with someone they suspect had a STI or those deemed to have had too many sexual partners in the past year are also banned.

BBC: NEWS | Health | Buying sperm over the internet

That prevents unwanted competition from females and allows them to have more sex with other chimps undisturbed.

BBC: Monogamy shunned by female chimps