Kerala’s health officials are ramping up efforts as a preliminary case of the Nipah virus has emerged in Kozhikode. A businessman is currently on ventilator support, which has triggered heightened surveillance and extensive contact tracing.Kerala’s health officials are ramping up efforts as a preliminary case of the Nipah virus has emerged in Kozhikode. A businessman is currently on ventilator support, which has triggered heightened surveillance and extensive contact tracing.