Jan 04, 2022 · CNBC’s Lori Ann LaRocco reports on the shuttering of the Chinese port of Ningbo due to a Covid outbreak and the impact it’s likely to have on the supply chain. 02:25. Tue, Jan 4 20223:05 PM EST.. China partly shut the world’s third-busiest container port after a worker became infected with Covid, threatening more damage to already fragile supply chains and global trade as a key shopping. "/>Ningbo port closed