Port Blair, April 20: During RAT conducted on 35 passengers bound for North & Middle Andaman at Ferrargunj, no positive case has been detected. At Helipad, 6 passengers were tested with RAT, no positive case has been detected. At Mohanpura Bus Terminus, test was conducted on 32 passengers and no positive case has been detected. At Phoenix Bay Jetty, 21 passengers were tested with RAT, no positive case has been detected.