Shanghai has designated some backup medical institutes for the quarantine and treatment of the increasing number of local COVID-19 and asymptomatic cases.Zhoupu Hospital in the Pudong New Area is among the first batch of backup medical institutes which can receive positive COVID-19 cases in emergency, Wu Jinglei, director of the Shanghai Health Commission, told a press briefing on Tuesday.Currently, most of the locally transmitted and imported COVID-19 cases and asymptomatic infections are under quarantined treatment at the Shanghai Public Health Clinical Center, the city's designated hospital for COVID-19 patients, in suburban Jinshan District.