A year after two north Kerala districts were hit by Nipah claiming 17 lives, the disease resurfaced in the state with a 23-year-old student here confirmed to be infected with the potentially deadly virus. The government said 311 people from various districts with whom the student had interacted were under observation. The student, who is being treated at a private hospital here, is slowly improving and his fever subsiding, according to a medical bulletin. The results of blood samples of the student, which were tested at the National Institute of Virology in Pune, have confirmed Nipah, the state Health minister said.

The result came this morning, she added. Earlier, blood samples examined at two virology institutes--Manipal Institute of Virology and Kerala Institute of Virology and Infectious Diseases--had indicated Nipah. The government said four people--three who attended to the…