postviral syndrome
noun/ˌpəʊstˈvaɪrəl sɪndrəʊm/
/ˌpəʊstˈvaɪrəl sɪndrəʊm/
(also postviral fatigue syndrome)
[uncountable]- a condition that follows a viral infection, in which somebody feels extremely weak and tired, and which can last for a long time
病毒后综合征（受病毒性感染后长时间虚弱疲劳）