Little is known about how social networks among women who inject drugs (WWID) can be leveraged to increase awareness about pre-exposure prophylaxis (PrEP). We tested the hypothesis that interpersonal characteristics influence willingness of WWID to communicate PrEP information with peers. Forty WWID ≥ 18 years completed social network surveys. Participants named on average 9.3 (SD = 3.3) network members, resulting in 375 unique relationships. WWID were willing to share PrEP information with 83% of network members. Participants had higher odds of willingness to share information within relationships when the network member was female, homeless and perceived to be at risk for HIV. Among relationships with family members and transactional sex clients, stronger emotional closeness was associated with higher odds of willingness to share information. Peer interventions where WWID share PrEP information with peers may be an efficient approach to increase PrEP awareness among this vulnerable population.

关于如何利用注射毒品妇女的社交网络（WWID）来提高人们对暴露前预防（PrEP）的认识还鲜为人知。我们检验了以下假设：人际特征会影响WWID与同伴交流PrEP信息的意愿。四十个WWID≥18年完成了社交网络调查。参与者平均命名为9.3（SD = 3.3）个网络成员，从而形成375个唯一关系。WWID愿意与83％的网络成员共享PrEP信息。当网络成员是女性，无家可归者并被认为有感染艾滋病毒的风险时，参与者有较高的意愿愿意在关系中分享信息。在与家庭成员和交易性服务对象的关系中，情感上的亲密关系越强，分享信息意愿的可能性就越高。