Shanghai tightens lockdown to hit zero-COVID goal by late May

Shanghai is tightening its already strict COVID-19 lockdown in a fresh push to eliminate infections outside quarantined areas of China's biggest city by late this month, people familiar with the matter said. Curbs will likely vary across the city's 16 districts as some have already hit the target, but the people said movement curbs will generally remain until the end of May due to fears of a rebound, despite recently falling case numbers in the country's worst coronavirus outbreak.