Nearly 3,400 cases were reported on Sunday, forcing shutdowns for millions of people and closure of schools in Shanghai
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China reported nearly 3,400 daily Covid-19 cases on Sunday, double the previous day, forcing lockdowns on virus hotspots as the country contends with its gravest outbreak in two years.
A nationwide surge in cases has seen authorities close schools in Shanghai and lock down several north-eastern cities, as almost 19 provinces battle clusters of the Omicron and Delta variants.
