Nearly half of Shanghai districts have basically achieved zero community transmission of COVID-19 as the resurgence has been effectively put under control, Shanghai Executive Vice Mayor Wu Qing said on Friday.Suburban Jiading District reached the standard of "\\;basically zero social transmission"\\; on Thursday, making a total of seven districts to achieve the primary goal in Shanghai's fight against the COVID-19 pandemic, Wu told the city's daily coronavirus press briefing."\\;The pandemic has been put under effective control and the situation is trending steadily towards a good prospect,"\\; Wu said.