15 prevention and control measures After upgrading to the second-level response, the 15 prevention and control measures that must be strengthened include:  Strictly prevent and control measures for farmers’ markets, vegetable markets, restaurants, units, canteens, etc., comprehensively standardize the implementation of environmental killings, and strengthen monitoring. All cold and wet underground business sites are closed. Employees of the above business sites must wear Masks and gloves. Strict inspection and quarantine of food at ports, improve the quarantine standards for imported food, and strengthen traceability management. Relevant personnel in the middle and high-risk streets and new markets are strictly prohibited from leaving Beijing. Others insist on not leaving Beijing if necessary, and those who do need to leave Beijing must hold a negative nucleic acid test certificate within 7 days. The closed-end management of the community shall be restored, and measures such as temperature measurement, verification, code inspection and registration shall be implemented before entering. Foreigners and vehicles in communities and villages under the jurisdiction of towns and villages

Source: Avian Flu Diary: Beijing Cancels Hundreds Of Flights & Reports 31 New COVID-19 Cases