In the sixth survey which started from September 24, a total of 28,000 samples were collected from all the 280 wards, including the New Delhi Municipal Council and Cantonment Board.The report was submitted to the Delhi government on Wednesday.Sero surveys examine the liquid part of blood, or serum, and detect an immune response to the virus material, not SARS-CoV-2 virus material itself.Meanwhile, Delhi continues to show a declining trajectory in the daily Covid-19 caseload.
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