2+ 12 means 2 days of closed-loop management+12 days of strict community health management. Two-day closed-loop management requires staying indoors and conducting nucleic acid detection twice, with an interval of more than 24 hours. /kloc-strict community health management for 0/2 days, that is, independent health observation for 12 days after negative nucleic acid test for the first two days. Take the initiative to declare to the village, community and unit as required, and actively cooperate with the village, community and unit to carry out health monitoring and nucleic acid detection, so as to reduce going out without gathering. Once you have symptoms such as fever and cough, please take personal protection immediately and go to the fever clinic. Please try to avoid taking public transport when visiting a doctor, and truthfully tell the attending doctor about his personal residence history, activity history and contact history.