I'm scared my baby has contracted viral encephalitis. what should i look out for?

Encephalitis symptom: Watch for change in its normal behaviors...Increased fussiness, vomiting, crying inconsolably, or fever and seizure activity.

Headache etc.: Headache, which in preverbal children may only result in fussiness, failure to thrive, vomiting, lethargy. Other symptoms include neck rigidity, body arching, unresponsiveness, seizures, fever, speech disturbance, hallucinations, emotional lability (outbursts). Possibilities are numerous.