Shanghai authorities have backed away from their plan to relax lockdown measures in the city as daily Covid-19 infections remain high. China’s biggest commercial city added 27,719 new coronavirus cases according to data released on April 14, 2022, bringing the city’s total infections to 280,000 since March 1. Residents in low-risk areas with no infections in the past 14 days can move around within their compound but are still barred from venturing out onto the streets. Apartment blocks and…