THIRUVANANTHAPURAM: The Health Department has revised the guidelines for those coming to Kerala from other states. They must undergo RT-PCR testing or 14 days of room isolation. Everyone coming to Kerala from other states should register on the e-Jagratha portal. Those who have taken the vaccine must undergo an RT-PCR test within 48 hours before arriving in the state. Others should undergo an RT-PCR test as soon as they arrive in Kerala and remain in room isolation at their place of residence till the result of the test is received.