If serial monogamy is the norm, even if individuals have many partners over time, the virus is trapped within relationships and gets around slowly.

 
  • 如果人们的一夫一妻婚姻是短暂且连续的,即便是一个人先后有不同的性伙伴,那么艾滋病毒也会局限在一个小圈子里传播。
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