Elford Jonathan, Bolding Graham, Sherr Lorraine, Hart Graham
City University London, Institute of Health Sciences, St Bartholomew School of Nursing and Midwifery, London, UK.
AIDS. 2007 Jan 11;21(2):243-5. doi: 10.1097/QAD.0b013e3280118fdb.
Serosorting is an HIV risk reduction strategy whereby some gay men only engage in unprotected anal intercourse with casual partners of the same HIV status. There was no evidence of an increase in serosorting among HIV-negative gay men in London between 1998 and 2005 (1.7%, 1.2%; test for a trend P = 0.1). By way of comparison, the percentage of HIV-positive gay men who reported serosorting more than doubled during this time (6.8%, 17.7%, P < 0.01).
血清型分类是一种降低感染艾滋病毒风险的策略，一些男同性恋者只与具有相同艾滋病毒感染状况的临时性伴侣进行无保护肛交。1998年至2005年间，伦敦的艾滋病毒阴性男同性恋者中没有证据表明血清型分类行为有所增加（分别为1.7%、1.2%；趋势检验P = 0.1）。相比之下，报告进行血清型分类的艾滋病毒阳性男同性恋者的比例在此期间增加了一倍多（分别为6.8%、17.7%，P < 0.01）。
