Fig. 2

Subjective and objective obstacles of MSM with objective need of PrEP for HIV prevention. Of the 62 participants who had objective need but unwillingness to use PrEP, the reasons were summarized as below: 40 (64.5%) were concerned about PrEP side-effect; 34 (54.8%) did not know where to get PrEP; 30 (48.4%) believed the occurrence of high-risk behavior is unpredictable; 12 (19.35%) had low HIV risk perception and 21 (33.87%) had pill fatigue. Of the 450 participants who failed to obtain PrEP but with willingness, the reasons were summarized as below: 352 (78.2%) considered the cost of PrEP is too high; 172 (38.2%) worried about long distances for PrEP delivery; 150 (33.33%) reported that medical institutions were closed when needed, and 42 (9.33%) were previously rejected by medical institution