The ministry has constituted a multi-disciplinary team headed by the Director of National Centre for Disease Control (NCDC), which has reached there on Monday.
"The Health Minister has directed constitution of a high-level team of doctors and the selected team has reached Kerala. It is being suspected that the virus is being spread by bats," a health ministry official said.
"The team comprises officials from the department of Animal Husbandry, National Institute of Immunology and Indian Council of Medical Research, among others. The ministry is in close touch with Kerala health department to monitor the situation," the official added.
The Kozhikode health department is maintaining vigilance in the wake of three deaths. Two more persons, who were allegedly in contact with the deceased, are believed to be in a serious condition.
NiV is also capable of causing disease in pigs and other domestic animals. There is no vaccine for either humans or animals. The primary treatment for human cases is intensive supportive care, the WHO says on its website.
Get Breaking news, live coverage, and Latest News from India and around the world on NDTV.com. Catch all the Live TV action on NDTV 24x7 and NDTV India. Like us on Facebook or follow us on Twitter and Instagram for latest news and live news updates.