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Fig. 1 | BMC Medical Research Methodology

Fig. 1

From: COVID-19 prevalence estimation by random sampling in population - optimal sample pooling under varying assumptions about true prevalence

Fig. 1

Algorithm used to minimize the number of RT-PCR reactions in pooled sampling. Negative pools regard all constituent patient samples as negative, whereas positive pools are split in two, and the process repeated. Red circle = Pool testing positive. Grey circle = Pool testing negative. Red/grey squares = Patient samples in pool, with color indicating diseased/non-diseased status

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