The six died at the Baba Raghav Das Medical College Hospital (BRD-MCH) here yesterday. They belonged to different district of eastern Uttar Pradesh.
As many as 15 patients of encephalitis were admitted to the hospital during the past 24 hours, they said.
A total of 2,335 encephalitis patients have been admitted to hospitals this year, the officials said.
Over 200 patients are being treated at BRD MCH at present, they said.