Shanghai has reported 16 community infections and declared 13 areas as "medium risk" since the city lifted the two-month-long COVID-19 lockdown and allowed residents to resume normal work on June 1, according to the local health commission.

The scattered cases were found in 13 subdistricts and towns in Jing'an, Huangpu, Xuhui, Hongkou and Baoshan districts as well as the Pudong New Area.

The trails of the new infections, aged between five and 77 years, mainly include residential communities, office buildings, hospitals, shopping malls and supermarkets, said Zhao Dandan, deputy director of the Shanghai Health Commission.