Shanghai will continue "\\;grid screening"\\; on COVID-19 with classified areas, while recruiting more volunteers, including interpreters, among residents to assist in the campaign.The number of new confirmed local COVID-19 cases and asymptomatic patients reported in Shanghai has been hitting daily records every day since the massive screening was launched on March 16. On Sunday, it reported 24 locally transmitted cases and 734 local asymptomatic infections.The city has opened more makeshift central quarantine and treatment sites to treat the new cases, Wu Jinglei, director of the Shanghai Health Commission, told a press briefing on Monday.