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    Positive PCR tests per room. by Martin S. Zand (623236)

    Published 2024
    “…Statistical comparison with the Mann-Whitney U-test (p<0.0012). (B) The time in each room where the ambient CO<sub>2</sub> ≥ 1,000 ppm was plotted against positive PCR tests in that room normalized by mean room occupancy. …”
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