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correlation between CPS-specific antibody concentrations in serum, vaginal secretions, and nasal samples. Spearman correlation coefficient are respectively, between serum and vaginal secretions: r = 0.61 (n = 32), between vaginal secretions and nasal samples: r = 0.76 (n = 8), and between serum and nasal samples: r = 0.45 (n = 37).
