Thiruvananthapuram/New Delhi: Six people have died in Kerala's Kozhikode due to the mysterious "Nipah virus". Kerala is on high alert and a 24-hour control room has been set up to monitor the situation. The central government has sent a team. Union Health Minister JP Nadda tweeted on Sunday that he had asked the chief of the central disease control body to visit the affected district and take steps. The Nipah virus or NiV infection has symptoms like breathing trouble, inflammation of the brain, fever, headache, drowsiness, disorientation and delirium. A patient can slip into coma within 48 hours.