Chronic fatigue syndrome is most commonly triggered by an acute illness, like glandular fever, and it is the severity of this illness that decides whether you will develop the syndrome, the research found.

• 研究发现，慢性疲劳综合症最常见的触发因素是像传染性单核细胞增多症等的急性病，这种急症的严重性决定了人们是否会患上慢性疲劳综合症。