Health authorities in China's northwest city of Xi'an are still struggling to establish a clear train of transmission for the latest cluster of COVID cases, which has led to a citywide lockdown of almost 13 million residents and drawn criticism of its pandemic response.
The capital city of Shaanxi Province reported 151 domestically transmitted infections on Tuesday, bringing the total number of locally confirmed cases in Xi'an to 962 between Dec. 9 and Dec. 28, according to a statement from the provincial health commission on Wednesday.
