China's Wuhan shuts some businesses, transport amid new COVID cases

China's Wuhan shuts some businesses, transport amid new COVID cases BEIJING, July 27 (Reuters) - China's central metropolis of Wuhan temporarily shut some businesses and public transport in a district with almost a million people on Wednesday, as the city where the pandemic first emerged raised vigilance after several new infections. China, heavily invested in its "dynamic COVID zero" policy, relies on mass testing, quick restriction on business activity and people's movements and strict quarantine of cases to block nascent clusters from widening. The strategy has helped Wuhan and other areas in the country to keep the number of cases…