A notice on a door of a compound that was designated as a medium-risk area for Covid-19 says that the compound is temporarily closed due to epidemic prevention and control on Friday. Shanghai has reported three new cases since Thursday. Photo: VCG

A cat sits in front of the closed gate of GlaxoSmithKline’s office building in Shanghai on Friday, which was closed due to the requirements of epidemic prevention and control. Photo: VCG

A medical staff guides citizens to take a nucleic acid test on Saturday. Many hospitals in Shanghai provided full services for outpatients and 24-hour nucleic acid testing on the weekend. Photo: Yin Liqin/ China News Agency, VCG

A woman takes a nucleic acid test in Shanghai First People’s Hospital on Sunday. Photo: Yin Liqin/ China News Agency, VCG

An epidemic prevention personnel guides people at the door of a closed compound in Shanghai on Friday. Photo: Yin Liqin/ China News Agency, VCG

Epidemic prevention staff work at the door of a compound that is designated as one of the three medium-risk areas in Shanghai on Saturday. Photo: VCG

Two epidemic prevention staff check the takeout of the residents of a closed compound in Shanghai’s Qingpu District on Saturday. Photo: VCG

A large number of cotton quilts have been supplied to a hospital in Shanghai on Friday. Photo: VCG

A patient collects medicine at the pharmacy of Shanghai Hexin Hospital, which kept a clinic opened for outpatients on weekends. Photo: Zhang Hengwei/ China News Agency, VCG

Construction workers line up for nucleic acid tests at Shanghai Zhongshan Hospital on Friday. Photo: VCG