As China's Covid-19 outbreak comes largely under control and economic activities gradually resume, the pandemic has spread explosively worldwide. The total number of cases exceeded 1.5 million as of Saturday, and experts warn that for domestic prevention purposes China needs to remain vigilant.
The current outbreak is at a critical stage, with the disease in Europe and the U.S. not effectively controlled and new cases increasing exponentially in less developed and underserved areas such as Africa, South America and India, bringing great uncertainty to the global fight against the disease, Zhang Wenhong, known for his work leading Shanghai's Covid-19 clinical expert team, told Caixin in an interview.
