Some develop encephalitis, a brain disease that can lead to headaches, coma or seizures.

VOA: special.2010.07.12

She was in a coma and was not able to communicate for several weeks.

VOA: special.2010.04.14

At the hospital he fell into a coma and was unable to communicate.

VOA: special.2010.04.14

The disease causes sleep disorders, mental confusion,personality changes, speech problems,seizures and coma.

VOA: special.2010.01.04

For two days, the president remained in a coma.

VOA: special.2010.07.29