China’s Ningbo-Zhoushan container port, the world’s third-busiest, remained partially closed for a sixth day on Monday, amid ongoing concern over whether the shutdown will disrupt trade from the region longer term. The port has not published any updates on its operations since Wednesday, when it halted all inbound and outbound container services at its Meishan terminal after one employee tested positive for coronavirus. Consultant GardaWorld estimated the terminal accounted for about 25 per cent of container cargo through the port, though Ningbo-Zhoushan had said it would redirect ships to other terminals and adjust operating hours at other docks. An employee at the port’s media centre said they had no new information to share when contacted by Bloomberg News on Monday. No new infections have been reported at the port since the initial case. China’s zero Covid approach sparks debate about long-term economic impact Shipping firm Yang Ming Marine Transport warned clients of potential “port congestion” due to the partial closure in an advisory on Monday, while Orient Overseas Container Line reminded customers to check terminals before arranging container gain-in at Ningbo in a notice on Saturday. Maersk said on Friday it had an AC6 vessel at the Meishan terminal, and that all its AC6 ships will omit Ningbo in August. Since bringing the initial coronavirus outbreak in Wuhan under control last year, China has taken a zero-tolerance approach to the coronavirus, taking strict measures to quash even single cases, especially at strategic locations like ports. The latest port disruption followed the closure for about a month of Shenzhen’s Yantian port in late May after an outbreak among port staff. It is also stoking fears that ports around the world could face similar outbreaks soon given the spread of the highly-infectious Delta variant, potentially triggering the sorts of curbs and disruptions that impacted global shipping last year.