Encephalitis, resulting in inflammation of the brain and affecting the patient's central nervous system had claimed over 250 lives in West Bengal last year.

The first deaths were reported in May.
Encephalitis, caused due to bacterial or viral infections of the brain, injection of toxic substances or increased complications of an infectious disease and resulting in inflammation of the brain and affecting the patient's central nervous system, had claimed over 250 lives in West Bengal last year.
While the lesser symptoms include headache and fever, the more severe ones cause the onset of mental issues like seizures, confusion, disorientation, tremors and hallucinations.
For Japanese Encephalitis, while human beings are the dead-end hosts of the virus, pigs act as amplifying hosts that aid in spread of the disease.
Source-IANS