Shanghai： The nucleic acid test results of 68,517 confirmed cases infected with Delta mutant were all negative.

CCTV News:Yesterday (4th), Shanghai held a press conference on epidemic prevention and control, saying that at present, Shanghai CDC has basically completed the epidemiological investigation and gene sequencing of a confirmed case of a foreign cargo plane service worker in the freight area of Shanghai Pudong Airport discovered on the 2nd. The results of gene sequencing showed that Covid-19 infected by this case in Shanghai belonged to Delta mutant, which had high homology with Delta mutant abroad.

Wu Huanyu, Deputy Director of Shanghai CDC:The results of gene sequencing showed that COVID-19 infected by this case belonged to Delta mutant, which was not related to the genome of many local cases in China recently, but had high homology with Delta mutant abroad. According to the comprehensive judgment and analysis of the expert group, it is considered that the infection source of the confirmed case can focus on the infection caused by exposure to the environment polluted by the imported virus.

Shanghai: All the 68,517 screened subjects were negative in nucleic acid test results.

Yesterday (4th), the reporter learned from the press conference on epidemic prevention and control in Shanghai that a newly confirmed case of COVID-19 in Shanghai on August 2nd was of ordinary type, and now it is being treated in isolation in Shanghai Public Health Clinical Center, and the condition is stable. As of 14: 00 on August 4, 67 close contacts in Shanghai and 377 close contacts in Shanghai have been investigated. In Shanghai, 68,517 screening subjects, the results of nucleic acid test were all negative, and 585 items and environmental samples in relevant places were investigated, and the test results were all negative. In the next step, Shanghai will continue to adhere to the overall prevention and control strategy of "external defense input and internal defense rebound", pay close attention to key points and joints such as "entrance to the city, employment posts and school gates", and strengthen the closed-loop management of the whole chain of epidemic prevention and control.