Authorities identified 87 cases after testing 1,496 residents in Fu Sing House at Fu Cheong Estate.
At Shing Hing House of Kwai Shing East Estate, 78 Covid infections were detected.
The operations in Oi Tat House of On Tat Estate and Hang On House of Wo Lok Estate in Kwun Tong found 105 cases between them.
122 infections were picked up at Choi Yuk House of Choi Yuen Estate in Sheung Shui.
There were also dozens of indeterminate cases.
Residents with negative test results have since been allowed to leave their homes again.
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Last updated: 2022-03-21 HKT 15:39