The commercial hub of 25 million was making a fresh push to bring case numbers outside the areas that were facing the strictest curbs to zero by the second half of May, people familiar with the matter told Reuters.
The people said movement curbs will generally remain through the month due to fears of a rebound even though case numbers have been falling.
Authorities in some districts issued notices ordering people back into their residential compounds after having let them out for brief walks or quick shopping.
In a video shared widely on Chinese social media, police in hazmat suits argue with residents who were told they needed to be quarantined after a neighbour tested positive.
“This is so that we can thoroughly remove any positive cases,” one of the officers is heard saying. “Stop asking me why, there is no why. We have to adhere to national guidelines.”
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