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  "documentTitle": "ovid-19 Special Primer (2020)",
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  "notes": "Illustrates hierarchical testing strategies (pooling) to reduce diagnostic costs.",
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      "text": "Group testing method A: Samples are distributed into equal groups, and each group is tested. If a group's test result is positive, then each sample in that group is re-tested individually",
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      "text": "This method was used to test the vast majority of Wuhan's population, allowing officials to group test 2.3 million people (with up to 5 samples in each group) and identify 56 cases in a little over two weeks",
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      "text": "This method is being trialled by the Rwandan government, potentially cutting the cost of testing each person from USD 9 to USD 0.75",
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      "text": "Group testing method C: Method C involves two rounds of testing, Samples are arranged in a square matrix in the second round, where each row and column is treated as a group and tested",
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      "text": "Sources: Nature (link) and medRxiv (link).",
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