O'Brien Sheila F, Osmond Lori, Goldman Mindy
Epidemiology & Surveillance, Canadian Blood Services, Ottawa, Ontario, Canada.
School of Epidemiology & Public Health, University of Ottawa, Ottawa, Ontario, Canada.
Transfusion. 2025 Aug;65(8):1451-1459. doi: 10.1111/trf.18302. Epub 2025 Jun 16.
In September 2022, Canadian Blood Services replaced the time-based deferral for gay and bisexual men who have sex with men (gbMSM) with sexual behavior-based questions. All donors who had sex with a new partner or >1 partner in the last 3 months and anal sex were deferred, permitting gbMSM with one regular partner to donate. We aimed to measure compliance with the new criteria post-implementation.
Pre-implementation 42,999; post-implementation 41,157 donors were invited to complete an anonymous online sexual risks survey. Results were weighted reflecting the donor base age, sex, and geography base. Frequencies and 95% confidence intervals were calculated.
In total, 13,159 donors participated pre-implementation (33% participation, 6532 females and 6627 males of whom 183 had ever had sex with another man (gbMSM)); post-implementation 11,217 donors (28% participation, 5253 females and 5964 males of whom 188 were gbMSM). Pre-implementation 9.3% (4.3%-14.2%) gbMSM had a new or >1 partner and anal sex in the last 3 months (all ineligible), similar to post-implementation when some were eligible (8.9%, 4.1%-13.8%, p > .05). There was no difference between pre- and post-implementation for non-gbMSM males (pre- 0.7%, 0.5%-1.0% vs. post-0.7%, 0.4-0.9) and females (pre- 0.8%, 0.6%-1.0% vs. post-0.6%, 0.4-0.8%) (p > .05). The estimated non-compliance of those with deferrable behavior was 87% (79%-93%). Most donors reported being comfortable with the new questions.
The majority of donors with deferrable sexual behaviors failed to disclose post-implementation. Donors may make a judgment about whether they need to disclose behaviors in screening.
2022年9月，加拿大血液服务中心将针对与男性发生性关系的男同性恋者（gbMSM）基于时间的延期献血政策替换为基于性行为的问题筛查。所有在过去3个月内与新伴侣或超过1名伴侣发生性行为且有肛交行为的献血者均被延期献血，允许只有一名固定伴侣的gbMSM献血。我们旨在评估新标准实施后的依从性。
实施前邀请了42999名献血者；实施后邀请了41157名献血者完成一项匿名在线性风险调查。结果根据献血者群体的年龄、性别和地域进行加权。计算了频率和95%置信区间。
实施前共有13159名献血者参与（参与率33%，女性6532名，男性6627名，其中183名曾与另一名男性发生过性行为（gbMSM））；实施后有11217名献血者参与（参与率28%，女性5253名，男性5964名，其中188名是gbMSM）。实施前9.3%（4.3%-14.2%）的gbMSM在过去3个月内有新伴侣或超过1名伴侣且有肛交行为（均不符合献血条件），与实施后情况类似，实施后部分人符合条件（8.9%，4.1%-13.8%，p>0.05）。实施前后非gbMSM男性（实施前0.7%，0.5%-1.0%；实施后0.7%，0.4-0.9）和女性（实施前0.8%，0.6%-1.0%；实施后0.6%，0.4-0.8%）之间无差异（p>0.05）。有可延期行为者的估计不依从率为87%（79%-93%）。大多数献血者表示对新问题感到满意。
大多数有可延期性行为的献血者在实施后未披露相关情况。献血者可能会自行判断在筛查中是否需要披露行为。
