Nanjing COVID-19 outbreak most extensive contagion after Wuhan
Since the first confirmed case of the latest outbreak was detected on July 20 at Nanjing Lukou International Airport, nearly 200 infections have been reported as of Thursday morning.
Compared to previous rounds of domestic virus resurgences that were usually limited to one city or a few nearby cities, the Nanjing epidemic occurred at a busy international airport, and trans-regional passengers traveling for long distance soon brought the virus across the country to places including Southwest China's Sichuan and Northeast China's Liaoning, experts noted.
Zhangjiajie in Hunan Province is believed to be another key node on the infection chain. Four infected cases who had been to the Lukou airport were found watching a cultural performance with more than 2,000 people in Zhangjiajie on July 22. Beijing reported two confirmed cases who returned from Zhangjiajie on Thursday.
The highly transmissible Delta variant strain also led to the quick spread of the virus nationwide, Wang Guangfa, a respiratory expert at Peking University First Hospital, told the Global Times on Thursday. ■