Siliguri, July 17 (ANI): Encephalitis syndrome looms large over West Bengal killing around 25 people while 70 others are undergoing treatment in the hospital. In the past few days, the North Bengal Medical College and Hospital (NBMCH) near Siliguri under Darjeeling district has been flooded with patients complaining of Encephalitis symptoms. According to health department official at least 100 patients with suspected encephalitis were under treatment at different hospitals across north Bengal, especially in Darjeeling and Jalpaiguri districts. He added that the figure was increasing everyday. Father of an admitted patient, Nirmal Roy said that lots of people have died due to sudden outbreak of fever. Meanwhile, the hospital authorities denied commenting on the death cases. Encephalitis is an acute inflammation of the brain and can be due to both viral and bacterial infections. Japanese encephalitis, which is caused by the Japanese encephalitis virus, is more prevalent in the region than other forms of the illness. Symptoms include high fever, convulsion and frigidity around the neck area. There is no specific treatment for the disease.