Encephalitis is not contagious, but any of the viruses that cause encephalitis can be. Make sure that your children are vaccinated with common childhood vaccinations because those are the ones that can also cause this disease.
Treatment
Antiviral drugs can be used to treat some forms, especially when caused by HSV.
Corticosteriods can help reduce the swelling in the brain.
Anticonvulsants are used to reduce the seizures.
Acetaminophen is used to reduce fever and headaches.