The clinical syndrome among identified cases is acute hepatitis (liver inflammation) with markedly elevated liver enzymes.

已确定病例的临床综合征是急性肝炎（ 肝脏炎症） 伴有肝酶显着升高。

The virus causes a clinical syndrome called west nile fever, but can progress to meningitis or encephalitis in the elderly, those with significant health problems, immunocompromised or young children.

这种病毒可以导致一种叫做西尼罗河热的综合征，但是在老年人、有严重健康问题的人、免疫低下人群、小儿中，可进展为脑膜炎和脑炎。