It was also higher in those who had injected for longer, older IDUs, those recruited in London and North West England, and those reporting having a previous voluntary confidential HIV test.

• 静脉注射吸毒者吸毒时间越长，年纪越大，来自伦敦和英国西北部地区，以及曾参加过保密的自愿HIV病毒检测者，乙肝病毒核心抗原检测阳性率越高。