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Correlation of log-transformed titers of the Plaque Reduction Neutralization (PRNT) and Microneutralization (MNT) Tests. The scatter plot illustrates the correlation between the log-transformed PRNT and MNT titers. The correlation including and excluding negative results is represented by the dashed line (n = 31, Spearman’s Rho = 0.419, p-value = 0.019) and solid line (n = 51, Spearman’s Rho = 0.901, p-value < 0.001), respectively.
