There are a few ways to prevent encephalitis. Diseases such as polio and measles can be prevented by vaccination. Avoiding ticks and controlling mosquitoes can help prevent the illnesses carried by them. Certain antibiotics, like chloroquine, can help prevent malaria.
Brain damage is a possible long-term effect of encephalitis. Some individuals will have permanent disability.
Some of the organisms that cause encephalitis can spread from person to person.