serious encephalitis B

例句：

1. 1. The patient wasdiagnosed with serious encephalitisand required immediate hospitalization.
   患者被诊断出患有严重的脑炎，需要立即住院治疗。
2. 2. The child's condition worsened rapidlyafter the diagnosis of serious encephalitis.
   在确诊为严重脑炎后，孩子的病情迅速恶化。
3. 3. The doctorsperformed a series of tests to determine thecause of the patient's seriousencephalitis.
   医生们进行了一系列的测试，以确定患者严重脑炎的原因。