Hepatitis A virus (HAV) has begun to spread globally among men who have sex with men (MSM). Hepatitis E virus (HEV) also may be transmitted through sexual contact among MSM. To assess the current status of these viruses among MSM in Japan, the seroprevalence of both viruses using 503 plasma samples collected between 2009 and 2018 from human immunodeficiency virus (HIV)‐positive male donors who were presumed to be mainly MSM was investigated. Our results suggested that HAV may be spreading within this population, as reported elsewhere. By contrast, the spread of HEV was confirmed only among younger HIV‐positive donors.

中文翻译：

---

甲型肝炎病毒和戊型肝炎病毒的流行与日本男性献血者中的人类免疫缺陷病毒感染有关。

甲型肝炎病毒（HAV）已开始在全球与男性发生性关系的男性中传播。戊型肝炎病毒（HEV）也可能通过男男性接触者之间的性接触传播。为了评估日本MSM中这些病毒的当前状况，使用了2009年至2018年间从人类免疫缺陷病毒（HIV）阳性男性供体（假设主要是MSM）中收集的503个血浆样本对这两种病毒的血清阳性率进行了调查。我们的结果表明，正如其他地方报道的那样，HAV可能在这一人群中传播。相比之下，仅在年轻的HIV阳性供体中证实了HEV的传播。