However, they said that people should avoid travelling to the four northern districts of Kerala - Kozhikode, Malappuram, Waynad and Kannur - to be "extra cautious".
Fruit bats are considered the natural host of the Nipah virus and health workers said they found dead bats in at a well at the home of an affected family.
Although the Nipah virus outbreak has not taken place in Karnataka, yet, there were apprehensions, compelling the medical department to scrutinize and double check the symptoms.
Dahiya said the officials have been directed to get people showing symptoms of the viral infection quarantined without delay.
Nipah Virus is associated with the inflammation of the brain that is likely to lead to severe fever followed by a state of confusion, disorientation and even persistent drowsiness.
The first fatal cases in Kerala were reported on Saturday from a family in Kozhikode, as two brothers in their late 20s and their 50-year-old aunt died from the virus. He said the dead bats have been sent to the National Institute of Virology (NIV) for investigation.
One more death was reported in Kerala's Calicut due to Nipah Virus on Sunday.
It is noted that Union Minister of Health and Family Welfare J.P Nadda taking cognizance of the issue, and also directed to constitute a team of six doctors to investigate the outbreak of the rare and deadly virus.
The health department also advised people to avoid consuming fruits that are half-eaten by bats or birds.
Research has shown that human infection is directly or indirectly related to fruit eating bats of the genus Pteropus.
Historically, it was first identified in Kampung Sungai Nipah in Malaysia in the year 1998.
Authorities are investigating whether deaths in a third Indian state are caused by Nipah virus after the disease has so far killed at least 11 in southern Kerala.
The virus can be transferred through infected bats, pigs or humans who have been infected.
Nipah has killed more than 260 people in Malaysia, Bangladesh and India since 1998 and has a mortality rate of almost 70 percent, according to the World Health Organization.
Is there a vaccine to prevent this disease? .
The major treatment for infected is "Intensive Supportive Care", according to United Nations health body.
Symptoms typically present one to two weeks after exposure and can include fever and headache, convulsions, respiratory and neurological problems, according to the agency.