translate English to French: The reported case fatality rate is approximately 0.5% to 2% 20,22,23 . Long-term follow-up studies show that a significant proportion (36% to 94%) of cases have a postencephalitic syndrome for months to years after the acute illness, characterized by neuro-psychiatric symptoms such as asthenia, severe headaches, memory loss, lack of concentration, decreased stamina, depression, ataxia, incoordination, tremor, and/or hearing impairment 22,24 .
Il existe d'autres tests spécifiques, comme l'amplification par la polymérase après une transcription inverse (RT-PCR nichée) pour détecter les acides nucléiques spécifiques, ou les Western blots, effectués dans des laboratoires spécialisés 20,25 .